{"id":637,"date":"2025-10-15T08:36:39","date_gmt":"2025-10-15T08:36:39","guid":{"rendered":"https:\/\/uptimerobot.com\/knowledge-hub\/?p=637"},"modified":"2025-10-28T11:52:28","modified_gmt":"2025-10-28T11:52:28","slug":"how-to-fix-dns-server-not-responding-error","status":"publish","type":"post","link":"https:\/\/uptimerobot.com\/knowledge-hub\/monitoring\/how-to-fix-dns-server-not-responding-error\/","title":{"rendered":"DNS Server Not Responding: Causes, Fixes, and Prevention Guide"},"content":{"rendered":"\n<p>You&#8217;re trying to load a website, but nothing happens. Maybe it spins forever, maybe you get a cryptic error. You check your internet, and everything else seems fine.&nbsp;<\/p>\n\n\n\n<p>The culprit? Often, it&#8217;s a <strong>DNS server not responding<\/strong>.&nbsp;<\/p>\n\n\n\n<p>This issue can crop up out of nowhere and bring your workflow to a halt, especially if you&#8217;re managing infrastructure, running a digital business, or supporting customers. DNS problems can look like network outages, but they\u2019re often fixable with a few smart steps.<\/p>\n\n\n\n<p>Knowing how to identify and resolve them quickly can save hours of downtime and frustration. Stick with us and you&#8217;ll learn how to diagnose and fix DNS server issues fast.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Key takeaways<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Understand what a &#8220;DNS server not responding&#8221; error really means<\/li>\n\n\n\n<li>Learn beginner and advanced DNS troubleshooting steps<\/li>\n\n\n\n<li>Fix DNS issues across Windows, macOS, and mobile devices<\/li>\n\n\n\n<li>Choose faster, more reliable DNS servers<\/li>\n\n\n\n<li>Prevent future DNS disruptions with proactive settings<\/li>\n<\/ul>\n\n\n\n<p><strong>Don\u2019t wait until your DNS fails.<\/strong><\/p>\n\n\n\n<p>Set up <a href=\"https:\/\/uptimerobot.com\/dns-monitoring\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>UptimeRobot\u2019s DNS Monitoring<\/strong><\/a> to detect DNS outages instantly &amp; before users notice.<\/p>\n\n\n    <div class=\"wp-block-knowledge-hub-theme-intext-sidebar ur-intext-sidebar\">\n        <div class=\"widget-img\">\n            <img decoding=\"async\" src=\"https:\/\/uptimerobot.com\/knowledge-hub\/wp-content\/themes\/generatepress-child\/assets\/images\/img-intext-sidebar.png\" alt=\"UptimeRobot\">\n        <\/div>\n        <div class=\"widget-left\">\n            <div class=\"widget-title\">\n                <span>Downtime happens.<\/span>\n                <span class=\"text-primary\">Get notified!<\/span>\n            <\/div>\n            <div class=\"widget-text\">Join the world&#039;s leading uptime monitoring service with 3.2M+ happy users.<\/div>\n        <\/div>\n        <div class=\"widget-button\">\n            <a href=\"https:\/\/dashboard.uptimerobot.com\/sign-up?utm_source=uptimerobot&#038;utm_medium=kh&#038;utm_campaign=intext-sidebar\" class=\"button\">\n                <span>Register for FREE<\/span>\n            <\/a>\n        <\/div>\n    <\/div>\n    \n\n\n\n<h2 class=\"wp-block-heading\">What does \u201cDNS server not responding\u201d mean?<\/h2>\n\n\n\n<p>When you see the error \u201cDNS server not responding,\u201d your device is telling you it can\u2019t reach the system that translates domain names (like example.com) into IP addresses.&nbsp;<\/p>\n\n\n\n<p>Without this translation, your browser doesn\u2019t know where to send your request, so websites won\u2019t load. This issue can affect a single site or your entire internet connection, depending on the cause.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">How DNS works behind the scenes<\/h3>\n\n\n\n<p>DNS, or Domain Name System, is like the internet\u2019s phonebook. When you type a URL into your browser, your device asks a DNS server to find the matching IP address. If the DNS server doesn\u2019t respond, the request times out, and your browser shows an error.<\/p>\n\n\n\n<p>Here\u2019s a simplified flow:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>You enter <mark style=\"background-color:rgba(0, 0, 0, 0);color:#66d07f\" class=\"has-inline-color\">www.example.com<\/mark> in your browser.<\/li>\n\n\n\n<li>Your device checks its local DNS cache.<\/li>\n\n\n\n<li>If no match is found, it queries the configured DNS server (often your ISP\u2019s).<\/li>\n\n\n\n<li>The DNS server returns the IP address.<\/li>\n\n\n\n<li>Your browser connects to the site.<\/li>\n<\/ol>\n\n\n\n<p>If step 3 fails because the DNS server is down, unreachable, or misconfigured, you\u2019ll get the \u201cDNS server not responding\u201d error.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">What the error actually means<\/h3>\n\n\n\n<p>This error doesn\u2019t always mean the DNS server is down. It could also mean:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Your device can\u2019t reach the DNS server due to a network issue.<\/li>\n\n\n\n<li>The DNS server is overloaded and ignoring requests.<\/li>\n\n\n\n<li>Your firewall or antivirus is blocking DNS traffic.<\/li>\n\n\n\n<li>You\u2019ve manually set an invalid DNS server in your network settings.<\/li>\n<\/ul>\n\n\n\n<p>For example, if you switch from automatic DNS to a custom one like 1.1.1.1 (Cloudflare) and mistype it, your device won\u2019t be able to resolve domains. The server isn\u2019t responding because it doesn\u2019t exist at that address.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Temporary vs persistent DNS issues<\/h3>\n\n\n\n<p>Some DNS errors are short-lived. A brief network hiccup, a router reboot, or a temporary outage on your ISP\u2019s end can trigger the message. Others are persistent and require manual fixes.<\/p>\n\n\n\n<p>Here\u2019s how to tell the difference, along with some quick fixes:<\/p>\n\n\n\n<figure class=\"wp-block-table aligncenter\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Type<\/strong><\/td><td><strong>Symptoms<\/strong><\/td><td><strong>Common causes<\/strong><\/td><td><strong>Quick fix<\/strong><\/td><\/tr><tr><td><strong>Temporary<\/strong><\/td><td>Error disappears after refresh or restart<\/td><td>Brief ISP outage, router reboot, Wi-Fi hiccup<\/td><td>Restart router or device; flush DNS cache<\/td><\/tr><tr><td><strong>Persistent<\/strong><\/td><td>Error appears across multiple devices or browsers<\/td><td>Misconfigured DNS settings, faulty router, ISP DNS failure<\/td><td>Switch to public DNS; update firmware; reset network settings<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Knowing which type you\u2019re dealing with helps narrow down the next steps.<\/p>\n\n\n\n<p>Before diving into solutions, it helps to understand what causes these errors in the first place.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Common causes of the error<\/h2>\n\n\n\n<p>A \u201c<strong>DNS server not responding<\/strong>\u201d message can stem from several underlying issues; sometimes on your device, sometimes on your network, and occasionally with your DNS provider itself.&nbsp;<\/p>\n\n\n\n<p>Here are the most common reasons this error appears.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. Misconfigured network or DNS settings<\/h3>\n\n\n\n<p>If your device is using the wrong DNS server address or a static IP that no longer exists, it won\u2019t be able to resolve domains. This often happens after switching networks, installing VPN software, or manually entering DNS addresses.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. DNS server outages or high latency<\/h3>\n\n\n\n<p>Even reliable public DNS providers like Google (8.8.8.8) and Cloudflare (1.1.1.1) can experience slowdowns or outages. When a DNS server is overloaded or temporarily unreachable, your browser times out while waiting for a response.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. Router or modem issues<\/h3>\n\n\n\n<p>Routers act as intermediaries for <a href=\"https:\/\/uptimerobot.com\/knowledge-hub\/devops\/understanding-dns-queries-a-complete-guide\/\" target=\"_blank\" rel=\"noreferrer noopener\">DNS queries<\/a>. When they overheat, crash, or use outdated firmware, DNS requests may not leave your local network. Stale DNS cache on the router can also trigger repeated lookup failures.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4. Firewall, VPN, or proxy interference<\/h3>\n\n\n\n<p>Firewalls and VPNs sometimes block or reroute DNS traffic. Overly strict security software can mistakenly classify DNS lookups as unsafe, while misconfigured VPNs and proxies may prevent queries from reaching your provider.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">5. Browser or operating system cache conflicts<\/h3>\n\n\n\n<p>Your browser or OS stores DNS records to speed up browsing, but cached entries can become outdated. If a site\u2019s IP address changes, your device may still try to reach the old one, leading to failed connections.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">6. IPv6 configuration problems<\/h3>\n\n\n\n<p>Dual-stack networks that support both <a href=\"https:\/\/uptimerobot.com\/knowledge-hub\/devops\/ipv4-ipv6\/\" target=\"_blank\" rel=\"noreferrer noopener\">IPv4 and IPv6<\/a> can encounter DNS timeouts if IPv6 is enabled but not configured correctly. The device keeps trying the IPv6 path even when it\u2019s nonfunctional.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">7. Malware or modified hosts file<\/h3>\n\n\n\n<p>Certain types of malware alter your DNS settings or modify your hosts file to redirect traffic. This can break normal resolution or send your requests to malicious servers instead.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">8. ISP-level problems or hijacking<\/h3>\n\n\n\n<p>Sometimes the issue isn\u2019t on your end. ISPs can experience DNS outages or intercept failed lookups for ad injection or filtering. If this happens, every device on the network will show the same error.<\/p>\n\n\n\n<figure class=\"wp-block-table aligncenter\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Source<\/strong><\/td><td><strong>Where it occurs<\/strong><\/td><td><strong>Typical symptom<\/strong><\/td><\/tr><tr><td><strong>Device settings<\/strong><\/td><td>Wrong or outdated DNS server, manual IP entry<\/td><td>Error appears only on one device<\/td><\/tr><tr><td><strong>DNS provider<\/strong><\/td><td>Public or ISP DNS outage, latency spikes<\/td><td>Affects all devices using the same network<\/td><\/tr><tr><td><strong>Router \/ modem<\/strong><\/td><td>Firmware bugs, overheated hardware, cache issues<\/td><td>Random timeouts or dropped connections<\/td><\/tr><tr><td><strong>Firewall \/ VPN \/ proxy<\/strong><\/td><td>Overblocking or misrouted DNS requests<\/td><td>Works when security tools are disabled<\/td><\/tr><tr><td><strong>Browser \/ OS cache<\/strong><\/td><td>Stale DNS or bad cached entries<\/td><td>Specific websites fail to load repeatedly<\/td><\/tr><tr><td><strong>IPv6 configuration<\/strong><\/td><td>Dual-stack conflict or misconfigured interface<\/td><td>Inconsistent DNS resolution<\/td><\/tr><tr><td><strong>Malware \/ hosts file<\/strong><\/td><td>DNS hijacking or unauthorized changes<\/td><td>Redirects or persistent DNS errors<\/td><\/tr><tr><td><strong>ISP network<\/strong><\/td><td>DNS interception or routing errors<\/td><td>All devices fail to resolve domains<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Quick fixes for beginners (simple first steps)<\/h2>\n\n\n\n<p>You don\u2019t need deep technical knowledge to solve most \u201cDNS server not responding\u201d errors. Many are caused by small, temporary issues that you can fix in a few minutes.<\/p>\n\n\n\n<p>Start with these quick, low-effort checks before moving on to advanced troubleshooting.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. Restart your router and computer<\/h3>\n\n\n\n<p>This simple step fixes a surprising number of DNS problems. Restarting your router resets the network connection and clears temporary issues that may block DNS queries.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Turn off your router and modem<\/strong>, then unplug them for 30 seconds.<\/li>\n\n\n\n<li>Restart your computer or device while they\u2019re unplugged.<\/li>\n\n\n\n<li>Plug the router and modem back in and wait for them to fully reconnect.<\/li>\n<\/ol>\n\n\n\n<p>Once everything is back online, test a few websites to see if the issue is gone.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. Try a different browser or device<\/h3>\n\n\n\n<p>If the problem only appears in one browser or device, it\u2019s likely not your DNS server.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Open the same site in another browser (for example, try Firefox instead of Chrome).<\/li>\n\n\n\n<li>If it loads fine, clear your browser cache or reset its settings.<\/li>\n\n\n\n<li>If the error appears across multiple browsers or devices, the issue is network-wide.<\/li>\n<\/ol>\n\n\n\n<p>This quick comparison helps rule out browser-level caching or local misconfigurations.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. Flush your DNS cache<\/h3>\n\n\n\n<p>Your operating system stores DNS entries locally. If those records become outdated or corrupted, your device may fail to connect. Clearing the cache forces a fresh lookup.<\/p>\n\n\n\n<p><strong>Windows:<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>ipconfig \/flushdns<\/code><\/pre><\/div>\n\n\n\n<p><strong>macOS:<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder<\/code><\/pre><\/div>\n\n\n\n<p><strong>Linux (systemd):<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>sudo systemd-resolve --flush-caches<\/code><\/pre><\/div>\n\n\n\n<p>After flushing, reopen your browser and try again.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4. Switch to a public DNS server<\/h3>\n\n\n\n<p>Your ISP\u2019s DNS servers can occasionally be slow or unreliable. Public DNS providers like <strong>Google (8.8.8.8)<\/strong>, <strong>Cloudflare (1.1.1.1)<\/strong>, or <strong>Quad9 (9.9.9.9)<\/strong> often respond faster and with fewer errors.<\/p>\n\n\n\n<p>You can change DNS settings on your device or router:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Windows:<\/strong> Control Panel \u2192 Network and Internet \u2192 Change adapter settings \u2192 right-click connection \u2192 Properties \u2192 select IPv4 \u2192 Use the following DNS addresses.<br><\/li>\n\n\n\n<li><strong>macOS:<\/strong> System Settings \u2192 Network \u2192 select your active connection \u2192 DNS tab \u2192 add new servers.<\/li>\n<\/ul>\n\n\n\n<p>After saving, test a few sites.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">5. Temporarily disable IPv6<\/h3>\n\n\n\n<p>If your network supports IPv6 but your router or ISP doesn\u2019t handle it properly, DNS lookups can hang. Disabling IPv6 is a quick diagnostic step:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>On <strong>Windows:<\/strong> Network and Sharing Center \u2192 Change adapter settings \u2192 right-click connection \u2192 Properties \u2192 uncheck Internet Protocol Version 6 (TCP\/IPv6).<br><\/li>\n\n\n\n<li>On <strong>macOS:<\/strong> System Settings \u2192 Network \u2192 select your active interface \u2192 Details \u2192 uncheck IPv6 (if available).<\/li>\n<\/ul>\n\n\n\n<p>If disabling IPv6 fixes the issue, you can keep it off or check your router\u2019s IPv6 configuration.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">6. Update network drivers or router firmware<\/h3>\n\n\n\n<p>Outdated or buggy drivers can cause connectivity issues, including DNS timeouts.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>On <strong>Windows<\/strong>, update your network adapter driver through Device Manager.<\/li>\n\n\n\n<li>On <strong>macOS<\/strong> and <strong>Linux<\/strong>, OS updates include network driver updates automatically.<\/li>\n\n\n\n<li>For routers, log in to the admin interface and check for firmware updates.<\/li>\n<\/ul>\n\n\n\n<p>Once updates are applied, reboot everything and retest your connection.<\/p>\n\n\n\n<p>These beginner steps often resolve the error without diving into advanced settings. If you&#8217;re still stuck, the next section covers deeper diagnostics and configuration fixes.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Advanced troubleshooting (for power users &amp; IT pros)<\/h2>\n\n\n\n<p>If the quick fixes didn\u2019t solve the problem, it\u2019s time to go deeper.<\/p>\n\n\n\n<p>The steps in this section use<strong> command-line tools<\/strong> and <strong>diagnostic utilities<\/strong> to uncover exactly where DNS resolution is failing. They\u2019re aimed at users comfortable working with network settings or supporting systems at scale.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. Use diagnostic tools (nslookup, dig, traceroute, ping)<\/h3>\n\n\n\n<p>Start by verifying how your system resolves DNS queries. Tools like <strong>nslookup<\/strong> (Windows, macOS, Linux) and <strong>dig<\/strong> (macOS, Linux) let you query DNS servers directly and see what responses you get.<\/p>\n\n\n\n<p><strong>Example:<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>nslookup uptimerobot.com<\/code><\/pre><\/div>\n\n\n\n<p>This shows which DNS server replied and what IP address it returned. If the request times out, specify another server to compare:<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>nslookup uptimerobot.com 8.8.8.8<\/code><\/pre><\/div>\n\n\n\n<p>Use <strong>dig<\/strong> for more detailed output:<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>dig uptimerobot.com<\/code><\/pre><\/div>\n\n\n\n<p>Focus on the <em>ANSWER SECTION<\/em> and <em>Query time<\/em>. If you get SERVFAIL or NXDOMAIN, the problem lies with your resolver or upstream server.<\/p>\n\n\n\n<p>To test basic connectivity, run:<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>ping 8.8.8.8<\/code><\/pre><\/div>\n\n\n\n<p>If ping fails, the issue is likely network-related, not DNS.<br>You can also trace the route to a DNS server:<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>traceroute 8.8.8.8 # macOS\/Linux<\/code><\/pre><\/div>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>tracert 8.8.8.8 # Windows<\/code><\/pre><\/div>\n\n\n\n<p>Dropped packets or high latency suggest a routing or firewall issue rather than a DNS one.<\/p>\n\n\n\n<p><strong>Tip: <\/strong>For continuous monitoring, you can use <a href=\"https:\/\/uptimerobot.com\/website-monitoring\/?utm_source=uptimerobot.com&amp;utm_medium=knowledge-hub&amp;utm_campaign=dns-server-not-responding&amp;utm_content=website-monitoring\" target=\"_blank\" rel=\"noreferrer noopener\">website monitoring tools<\/a>. They\u2019ll keep you up to speed the moment something goes wrong.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. Check DNS over HTTPS (DoH) settings<\/h3>\n\n\n\n<p>Modern browsers like Chrome and Firefox can encrypt DNS traffic using <strong>DNS over HTTPS<\/strong> (DoH). If the configured DoH provider is unreachable, your browser might show DNS errors even though system DNS still works.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Chrome:<\/strong> Settings \u2192 Privacy and security \u2192 Security \u2192 Advanced \u2192 <em>Use secure DNS<\/em><em><br><\/em><\/li>\n\n\n\n<li><strong>Firefox:<\/strong> Settings \u2192 General \u2192 Network Settings \u2192 Enable <em>DNS over HTTPS<\/em><\/li>\n<\/ul>\n\n\n\n<p>Try disabling secure DNS temporarily. If pages start loading, the DoH resolver was likely the issue.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. Inspect and reset the hosts file<\/h3>\n\n\n\n<p>Your hosts file overrides DNS lookups locally. Corrupted or modified entries can <a href=\"https:\/\/uptimerobot.com\/knowledge-hub\/devops\/dns-redirect-guide\/\" target=\"_blank\" rel=\"noreferrer noopener\">redirect<\/a> or block domains.<\/p>\n\n\n\n<figure class=\"wp-block-table aligncenter\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>OS<\/strong><\/td><td><strong>Default path<\/strong><\/td><\/tr><tr><td>Windows<\/td><td><mark style=\"background-color:rgba(0, 0, 0, 0);color:#66d07f\" class=\"has-inline-color\"><code>C:\\Windows\\System32\\drivers\\etc\\hosts<\/code><\/mark><\/td><\/tr><tr><td>macOS \/ Linux<\/td><td><mark style=\"background-color:rgba(0, 0, 0, 0);color:#66d07f\" class=\"has-inline-color\"><code>\/etc\/hosts<\/code><\/mark><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Open the file with admin privileges and review it for strange or duplicate entries. Remove unauthorized lines or restore it to the default minimal version (just <mark style=\"background-color:rgba(0, 0, 0, 0);color:#66d07f\" class=\"has-inline-color\"><code>127.0.0.1 localhost<\/code><\/mark>).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4. Router-level troubleshooting<\/h3>\n\n\n\n<p>If every device on your network shows the same error, the router may be at fault.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Log into your router\u2019s admin panel (usually at <strong>192.168.0.1<\/strong> or <strong>192.168.1.1<\/strong>).<br><\/li>\n\n\n\n<li>Check WAN or Internet DNS settings and confirm they point to valid servers (e.g., 8.8.8.8 or 1.1.1.1).<br><\/li>\n\n\n\n<li>Reboot the router or clear its DNS cache if the option exists.<br><\/li>\n\n\n\n<li>Update to the latest firmware. Outdated builds can cause intermittent DNS failures.<\/li>\n<\/ol>\n\n\n\n<p>For managed environments, verify that the router\u2019s <strong>DHCP<\/strong> service isn\u2019t distributing incorrect DNS information to connected devices.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">5. Internal or enterprise DNS issues<\/h3>\n\n\n\n<p>In corporate or hybrid environments, DNS problems may originate from internal resolvers.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Confirm that internal DNS servers are reachable (use <mark style=\"background-color:rgba(0, 0, 0, 0);color:#66d07f\" class=\"has-inline-color\"><code>ping<\/code><\/mark> or <mark style=\"background-color:rgba(0, 0, 0, 0);color:#66d07f\" class=\"has-inline-color\"><code>nslookup<\/code><\/mark> against them).<br><\/li>\n\n\n\n<li>Review split-horizon DNS configurations to ensure internal domains aren\u2019t conflicting with public ones.<br><\/li>\n\n\n\n<li>Check <strong>DHCP options 6 and 15<\/strong>. Incorrect domain suffixes or DNS server IPs can cause failed lookups.<br><\/li>\n\n\n\n<li>On Linux servers, inspect <mark style=\"background-color:rgba(0, 0, 0, 0);color:#66d07f\" class=\"has-inline-color\"><code>\/etc\/resolv.conf<\/code><\/mark> and logs via <mark style=\"background-color:rgba(0, 0, 0, 0);color:#66d07f\" class=\"has-inline-color\"><code>journalctl -u systemd-resolved<\/code><\/mark>.<br><\/li>\n\n\n\n<li>On Windows Server, check the <strong>DNS Manager<\/strong> event logs for recursion or zone errors.<\/li>\n<\/ul>\n\n\n\n<p>These diagnostic steps help narrow down whether the issue is local, network-wide, or upstream. Once you\u2019ve isolated the source, you can apply targeted fixes without guesswork.<\/p>\n\n\n\n<figure class=\"wp-block-table aligncenter\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Tool<\/strong><\/td><td><strong>What it checks<\/strong><\/td><td><strong>When to use it<\/strong><\/td><\/tr><tr><td><strong>nslookup<\/strong><\/td><td>Queries DNS servers directly and shows response IPs<\/td><td>Confirm whether your system can resolve domains<\/td><\/tr><tr><td><strong>dig<\/strong><\/td><td>Provides detailed DNS record data and query times<\/td><td>Inspect DNS resolution depth and upstream behavior<\/td><\/tr><tr><td><strong>ping<\/strong><\/td><td>Tests network reachability to an IP or domain<\/td><td>Verify if connection issues are network-related, not DNS<\/td><\/tr><tr><td><strong>traceroute \/ tracert<\/strong><\/td><td>Traces the network path to a target server<\/td><td>Identify latency, packet loss, or routing problems<\/td><\/tr><tr><td><strong>Wireshark \/ tcpdump<\/strong><\/td><td>Captures and analyzes network packets<\/td><td>Diagnose advanced or intermittent DNS communication issues<\/td><\/tr><tr><td><strong>journalctl \/ Event Viewer<\/strong><\/td><td>Logs DNS-related system events<\/td><td>Review DNS errors or service failures on your OS<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Fixing DNS issues on different devices<\/h2>\n\n\n\n<p>DNS errors can look different depending on the device you\u2019re using, but the root cause is usually the same: your device can\u2019t reach the DNS server that translates domain names into IP addresses.<\/p>\n\n\n\n<p>Here\u2019s how to troubleshoot DNS problems on major platforms.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Windows<\/h3>\n\n\n\n<p>On Windows, errors often appear as <em>\u201cDNS server isn\u2019t responding\u201d<\/em> or <em>\u201cThis site can\u2019t be reached.\u201d<\/em><\/p>\n\n\n\n<p>Try the following:<\/p>\n\n\n\n<p><strong>Flush the DNS cache:<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code> ipconfig \/flushdns<\/code><\/pre><\/div>\n\n\n\n<p><strong>Restart the DNS client service:<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>net stop dnscache<\/code><\/pre><\/div>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>net start dnscache<\/code><\/pre><\/div>\n\n\n\n<p><strong>Switch to a public DNS:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Control Panel \u2192 Network and Internet \u2192 Network and Sharing Center<br><\/li>\n\n\n\n<li>Change adapter settings \u2192 right-click connection \u2192 Properties<br><\/li>\n\n\n\n<li>Select <em>Internet Protocol Version 4 (TCP\/IPv4)<\/em> \u2192 <em>Properties<\/em><em><br><\/em><\/li>\n\n\n\n<li>Choose \u201cUse the following DNS server addresses\u201d and enter <strong>8.8.8.8<\/strong> and <strong>8.8.4.4<\/strong> (Google) or <strong>1.1.1.1<\/strong> (Cloudflare).<\/li>\n<\/ul>\n\n\n\n<p>If that doesn\u2019t help, check your firewall settings to ensure DNS queries over port 53 aren\u2019t blocked.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">macOS<\/h3>\n\n\n\n<p><strong>Clear the DNS cache:<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder<\/code><\/pre><\/div>\n\n\n\n<p><strong>Change DNS servers:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>System Settings \u2192 Network \u2192 select active connection \u2192 <em>Details<\/em><em><br><\/em><\/li>\n\n\n\n<li>Under <em>DNS<\/em>, add new servers like <strong>1.1.1.1<\/strong> and <strong>8.8.8.8<\/strong>, then click <em>OK \u2192 Apply<\/em>.<\/li>\n<\/ul>\n\n\n\n<p><strong>Reset network interface (if needed):<\/strong><\/p>\n\n\n\n<p>Turn Wi-Fi off and on, or delete and re-add the network under <em>Known Networks<\/em>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Linux (systemd-resolved)<\/strong><\/h3>\n\n\n\n<p><strong>Flush DNS cache:<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>sudo systemd-resolve --flush-caches<\/code><\/pre><\/div>\n\n\n\n<p><strong>Check current DNS servers:<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>systemd-resolve --status<\/code><\/pre><\/div>\n\n\n\n<p><strong>Edit resolv.conf or configure NetworkManager:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><mark style=\"background-color:rgba(0, 0, 0, 0);color:#66d07f\" class=\"has-inline-color\"><code>\/etc\/resolv.conf<\/code><\/mark> may be symbolic-linked to <mark style=\"background-color:rgba(0, 0, 0, 0);color:#66d07f\" class=\"has-inline-color\"><code>systemd-resolved<\/code><\/mark>.<br><\/li>\n\n\n\n<li>Add public DNS servers if your ISP\u2019s resolvers are slow or failing.<\/li>\n<\/ul>\n\n\n\n<p>Check logs with <mark style=\"background-color:rgba(0, 0, 0, 0);color:#66d07f\" class=\"has-inline-color\"><code>journalctl -u systemd-resolved<\/code><\/mark> to see if your resolver is failing or timing out.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>iOS<\/strong><\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Go to <em>Settings \u2192 Wi-Fi<\/em>.<\/li>\n\n\n\n<li>Tap the <em>i<\/em> next to your connected network.<\/li>\n\n\n\n<li>Scroll to <em>Configure DNS<\/em> \u2192 switch to <em>Manual<\/em>.<\/li>\n\n\n\n<li>Add servers such as <strong>1.1.1.1<\/strong> and <strong>8.8.8.8<\/strong>.<\/li>\n<\/ol>\n\n\n\n<p>For cellular data, you\u2019ll need a VPN or DNS app (like Cloudflare\u2019s 1.1.1.1 app) to override default DNS settings.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Android<\/h3>\n\n\n\n<p>Steps vary slightly by device and version:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Open <em>Settings \u2192 Network &amp; Internet \u2192 Internet<\/em>.<\/li>\n\n\n\n<li>Long-press your Wi-Fi network \u2192 <em>Modify network<\/em>.<\/li>\n\n\n\n<li>Under <em>IP settings<\/em>, switch from DHCP to <em>Static<\/em>.<\/li>\n\n\n\n<li>Enter DNS1 = <strong>1.1.1.1<\/strong>, DNS2 = <strong>8.8.8.8<\/strong>.<\/li>\n<\/ol>\n\n\n\n<p>For mobile data, use a VPN or custom DNS app to override carrier DNS.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Routers and access points<\/h3>\n\n\n\n<p>If DNS issues <strong>affect every device on your network<\/strong>, start here:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Log into your router\u2019s admin panel (usually <strong>192.168.0.1<\/strong> or <strong>192.168.1.1<\/strong>).<\/li>\n\n\n\n<li>Locate <em>DNS settings<\/em> under WAN or Internet.<\/li>\n\n\n\n<li>Replace ISP-assigned DNS with public ones (Cloudflare, Google, or Quad9).<\/li>\n\n\n\n<li>Save and reboot the router.<\/li>\n<\/ol>\n\n\n\n<p>Some routers cache DNS lookups; if you\u2019re still seeing errors, clear the cache (if supported) or restart the device.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Smart TVs, consoles, and streaming devices<\/h3>\n\n\n\n<p>These devices often have limited network settings but allow manual DNS configuration.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Open <em>Network Settings \u2192 Manual setup<\/em>.<\/li>\n\n\n\n<li>Enter public DNS addresses.<\/li>\n\n\n\n<li>Restart the device and test a connection.<\/li>\n<\/ol>\n\n\n\n<p>These platform-specific fixes cover the most common ways DNS errors appear across hardware and operating systems.<\/p>\n\n\n\n<p>If problems persist even after these steps, the issue likely lies with your router or DNS provider, not the device itself.<\/p>\n\n\n\n<figure class=\"wp-block-table aligncenter\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Device \/ OS<\/strong><\/td><td><strong>Where to change DNS<\/strong><\/td><td><strong>How to clear cache<\/strong><\/td><\/tr><tr><td><strong>Windows<\/strong><\/td><td>Control Panel \u2192 Network and Sharing Center \u2192 IPv4 Properties<\/td><td><mark style=\"background-color:rgba(0, 0, 0, 0);color:#66d07f\" class=\"has-inline-color\">ipconfig \/flushdns<\/mark><\/td><\/tr><tr><td><strong>macOS<\/strong><\/td><td>System Settings \u2192 Network \u2192 DNS tab<\/td><td><mark style=\"background-color:rgba(0, 0, 0, 0);color:#66d07f\" class=\"has-inline-color\">sudo dscacheutil -flushcache<\/mark>;<br><mark style=\"background-color:rgba(0, 0, 0, 0);color:#66d07f\" class=\"has-inline-color\">sudo killall -HUP mDNSResponder<\/mark><\/td><\/tr><tr><td><strong>Linux (systemd)<\/strong><\/td><td><mark style=\"background-color:rgba(0, 0, 0, 0);color:#66d07f\" class=\"has-inline-color\">\/etc\/resolv.conf<\/mark> or NetworkManager<\/td><td><mark style=\"background-color:rgba(0, 0, 0, 0);color:#66d07f\" class=\"has-inline-color\">sudo systemd-resolve &#8211;flush-caches<\/mark><\/td><\/tr><tr><td><strong>iOS<\/strong><\/td><td>Settings \u2192 Wi-Fi \u2192 Configure DNS (Manual)<\/td><td>Toggle Airplane mode or restart device<\/td><\/tr><tr><td><strong>Android<\/strong><\/td><td>Settings \u2192 Network &amp; Internet \u2192 Modify network \u2192 Static IP<\/td><td>Toggle Airplane mode or restart device<\/td><\/tr><tr><td><strong>Router<\/strong><\/td><td>Admin panel (usually 192.168.0.1 \/ 1.1) \u2192 DNS settings<\/td><td>Reboot router or clear cache (if supported)<\/td><\/tr><tr><td><strong>Smart TV \/ Console<\/strong><\/td><td>Network settings \u2192 Manual setup<\/td><td>Restart device<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Choosing the best DNS server for speed &amp; privacy<\/h2>\n\n\n\n<p>Not all DNS servers perform the same. Some are faster, some protect your privacy better, and some block malicious sites. Choosing the right one can make pages load quicker and keep your data secure.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Speed and reliability<\/h3>\n\n\n\n<p>The closer and better-maintained a DNS server is, the faster it responds.<br><br>Public DNS services like <strong>Google (8.8.8.8)<\/strong>, <strong>Cloudflare (1.1.1.1)<\/strong>, and <strong>Quad9 (9.9.9.9)<\/strong> run global networks with distributed data centers to reduce latency. Many use <strong>anycast routing<\/strong>, which automatically sends your query to the nearest node.<\/p>\n\n\n\n<p>You can test resolution speed from your location using tools such as <strong>Namebench<\/strong>, <strong>DNSPerf<\/strong>, or <strong>GRC\u2019s DNS Benchmark<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Privacy and data handling<\/h3>\n\n\n\n<p>DNS queries reveal which websites you visit. Some providers log this information, while others avoid it entirely.<\/p>\n\n\n\n<figure class=\"wp-block-table aligncenter\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Provider<\/strong><\/td><td><strong>Focus<\/strong><\/td><td><strong>Logs kept<\/strong><\/td><td><strong>Extras<\/strong><\/td><\/tr><tr><td><strong>Cloudflare (1.1.1.1)<\/strong><\/td><td>Privacy-first<\/td><td>No identifying logs; independent audits<\/td><td>DNS-over-HTTPS &amp; DNS-over-TLS<\/td><\/tr><tr><td><strong>Quad9 (9.9.9.9)<\/strong><\/td><td>Security &amp; privacy<\/td><td>No data monetization<\/td><td>Blocks known malicious domains<\/td><\/tr><tr><td><strong>Google DNS (8.8.8.8)<\/strong><\/td><td>Performance<\/td><td>Temporary logs (24-48 hrs)<\/td><td>High reliability &amp; analytics tools<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Always review a provider\u2019s privacy policy, especially if you\u2019re configuring DNS for work or shared devices.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Testing and switching DNS servers<\/h3>\n\n\n\n<p>Before switching completely, test one device first to measure speed and reliability.<\/p>\n\n\n\n<p><strong>Example:<\/strong><\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>dig example.com @1.1.1.1<\/code><\/pre><\/div>\n\n\n\n<p>This queries Cloudflare directly and shows response time. Try the same command with other providers to compare.<\/p>\n\n\n\n<p>Once you\u2019ve chosen, update DNS settings on your system or router:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Windows:<\/strong> Network &amp; Internet Settings \u2192 Change Adapter Options \u2192 IPv4 \u2192 Use the following DNS server addresses<\/li>\n\n\n\n<li><strong>macOS:<\/strong> System Settings \u2192 Network \u2192 DNS tab \u2192 Add servers<\/li>\n\n\n\n<li><strong>Routers:<\/strong> Admin panel \u2192 WAN or DHCP options \u2192 Update DNS settings<\/li>\n<\/ul>\n\n\n\n<p>Keep a note of your old settings in case you need to revert.<\/p>\n\n\n\n<p>Choosing a DNS provider is rarely one-size-fits-all. Benchmark a few options, check their privacy policies, and pick the one that balances <strong>speed, uptime, and data protection<\/strong> for your needs.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Preventing DNS issues in the future<\/h2>\n\n\n\n<p>Once your DNS is working again, a few proactive steps can help you avoid future outages or slowdowns.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. Use reliable and redundant DNS providers<\/h3>\n\n\n\n<p>Even the best DNS services experience downtime occasionally. Configure <strong>two or more providers<\/strong> (for example, Cloudflare + Google or Quad9) so your system has a fallback if one fails. If you manage your own DNS, distribute your authoritative nameservers across multiple regions and networks to prevent single points of failure.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. Monitor DNS health<\/h3>\n\n\n\n<p>DNS problems often go unnoticed until users start complaining. Continuous monitoring alerts you to failures before they escalate.<\/p>\n\n\n\n<p>Tools like <strong>UptimeRobot DNS Monitoring<\/strong> check whether your domain resolves correctly and send instant alerts for timeouts or missing records.<\/p>\n\n\n    <div class=\"wp-block-knowledge-hub-theme-intext-sidebar ur-intext-sidebar\">\n        <div class=\"widget-img\">\n            <img decoding=\"async\" src=\"https:\/\/uptimerobot.com\/knowledge-hub\/wp-content\/themes\/generatepress-child\/assets\/images\/img-intext-sidebar.png\" alt=\"UptimeRobot\">\n        <\/div>\n        <div class=\"widget-left\">\n            <div class=\"widget-title\">\n                <span>Downtime happens.<\/span>\n                <span class=\"text-primary\">Get notified!<\/span>\n            <\/div>\n            <div class=\"widget-text\">Join the world&#039;s leading uptime monitoring service with 3.2M+ happy users.<\/div>\n        <\/div>\n        <div class=\"widget-button\">\n            <a href=\"https:\/\/dashboard.uptimerobot.com\/sign-up?utm_source=uptimerobot&#038;utm_medium=kh&#038;utm_campaign=intext-sidebar\" class=\"button\">\n                <span>Register for FREE<\/span>\n            <\/a>\n        <\/div>\n    <\/div>\n    \n\n\n\n<p><strong>Tip:<\/strong> Monitor both public and internal DNS endpoints to catch regional or configuration-specific issues early.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. Keep DNS configurations up to date<\/h3>\n\n\n\n<p>Expired domains, outdated records, or stale caches can all cause errors.<br><br>Regularly review and clean up your <a href=\"https:\/\/uptimerobot.com\/knowledge-hub\/devops\/dns-record-types-explained\/\" target=\"_blank\" rel=\"noreferrer noopener\">DNS records<\/a> to remove unused entries and confirm that all A, AAAA, CNAME, and MX records point to the right destinations.<\/p>\n\n\n\n<p>Set reminders to:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Check domain and SSL certificate expiration dates<\/li>\n\n\n\n<li>Audit DNSSEC settings<\/li>\n\n\n\n<li>Update TTL values based on how often your records change<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">4. Strengthen security and reliability<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Enable <strong>DNSSEC<\/strong> to protect against tampering<\/li>\n\n\n\n<li>Use <strong>DNS-over-HTTPS (DoH)<\/strong> or <strong>DNS-over-TLS (DoT)<\/strong> for encrypted lookups<\/li>\n\n\n\n<li>Run malware scans occasionally to prevent host file modifications<\/li>\n\n\n\n<li>Keep routers and firmware updated to reduce DNS hijacking risks<\/li>\n<\/ul>\n\n\n\n<p>Taking a few preventive steps now can save hours of troubleshooting later. Combine redundancy, monitoring, and security best practices to keep your DNS, and your sites, stable and responsive.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Conclusion<\/h2>\n\n\n\n<p>DNS errors can be frustrating, but most are easy to diagnose once you know where to look. Restarting your router, flushing DNS cache, or switching to a public resolver fixes the majority of cases. For persistent or large-scale issues, tools like dig, nslookup, and active <a href=\"https:\/\/uptimerobot.com\/knowledge-hub\/monitoring\/dns-monitoring-the-complete-guide\/\" target=\"_blank\" rel=\"noreferrer noopener\">DNS monitoring<\/a> help uncover deeper problems.<\/p>\n\n\n\n<p>If you manage multiple sites or rely on uptime for business, <strong>automated DNS monitoring<\/strong> is the best safety net.<\/p>\n\n\n\n<p><a href=\"https:\/\/uptimerobot.com\/dns-monitoring\/?utm_source=uptimerobot.com&amp;utm_medium=knowledge-hub&amp;utm_campaign=dns-server-not-responding&amp;utm_content=dns-monitoring\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>UptimeRobot\u2019s DNS Monitoring<\/strong><\/a> continuously checks whether your domains resolve correctly and alerts you instantly when DNS records fail, change, or propagate incorrectly, so you can act before customers notice.<\/p>\n\n\n\n<p>Keep your DNS healthy, responsive, and reliable. Monitor it automatically with UptimeRobot.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-a89b3969 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/dashboard.uptimerobot.com\/sign-up\" target=\"_blank\" rel=\"noreferrer noopener\">Start monitoring DNS records<\/a><\/div>\n<\/div>\n\n\n\n<div id=\"faq\" class=\"faq-block py-8 \">\n            <h2 id=\"faqs\" class=\"faq-block__title\">\n            FAQ&#039;s        <\/h2>\n    \n    <ul class=\"faq-accordion\" data-faq-accordion>\n                    <li class=\"faq-accordion__item\">\n                <button \n                    class=\"faq-accordion__title\"\n                    type=\"button\"\n                    aria-expanded=\"false\"\n                    data-faq-trigger>\n                    <h3 id=\"whats-the-difference-between-slow-dns-and-no-response\" class=\"faq-accordion__question\">\n                        What\u2019s the difference between slow DNS and no response?                    <\/h3>\n                    <span class=\"faq-accordion__icon\" aria-hidden=\"true\">+<\/span>\n                <\/button>\n                <div class=\"faq-accordion__content-wrapper\">\n                    <div class=\"faq-accordion__content\">\n                        <div class=\"faq-accordion__content-inner\">\n                            <!-- wp:paragraph -->\n<p>Slow DNS means the server eventually answers, just not quickly enough, causing delays when loading pages. \u201cNo response\u201d means your device never receives an answer, so the request times out entirely.<\/p>\n<!-- \/wp:paragraph -->                        <\/div>\n                    <\/div>\n                <\/div>\n            <\/li>\n                    <li class=\"faq-accordion__item\">\n                <button \n                    class=\"faq-accordion__title\"\n                    type=\"button\"\n                    aria-expanded=\"false\"\n                    data-faq-trigger>\n                    <h3 id=\"should-i-always-use-google-or-cloudflare-dns\" class=\"faq-accordion__question\">\n                        Should I always use Google or Cloudflare DNS?                    <\/h3>\n                    <span class=\"faq-accordion__icon\" aria-hidden=\"true\">+<\/span>\n                <\/button>\n                <div class=\"faq-accordion__content-wrapper\">\n                    <div class=\"faq-accordion__content\">\n                        <div class=\"faq-accordion__content-inner\">\n                            <!-- wp:paragraph -->\n<p>They\u2019re reliable and fast for most users, but not always the best choice everywhere. Test a few options like Cloudflare, Google, and Quad9 to see which performs fastest in your region.<\/p>\n<!-- \/wp:paragraph -->                        <\/div>\n                    <\/div>\n                <\/div>\n            <\/li>\n                    <li class=\"faq-accordion__item\">\n                <button \n                    class=\"faq-accordion__title\"\n                    type=\"button\"\n                    aria-expanded=\"false\"\n                    data-faq-trigger>\n                    <h3 id=\"can-vpns-fix-dns-problems\" class=\"faq-accordion__question\">\n                        Can VPNs fix DNS problems?                    <\/h3>\n                    <span class=\"faq-accordion__icon\" aria-hidden=\"true\">+<\/span>\n                <\/button>\n                <div class=\"faq-accordion__content-wrapper\">\n                    <div class=\"faq-accordion__content\">\n                        <div class=\"faq-accordion__content-inner\">\n                            <!-- wp:paragraph -->\n<p>Sometimes. A VPN may route your DNS queries through its own servers, bypassing a broken ISP DNS. But a misconfigured VPN can also <em>cause<\/em> DNS failures. Test both with and without it.<\/p>\n<!-- \/wp:paragraph -->                        <\/div>\n                    <\/div>\n                <\/div>\n            <\/li>\n                    <li class=\"faq-accordion__item\">\n                <button \n                    class=\"faq-accordion__title\"\n                    type=\"button\"\n                    aria-expanded=\"false\"\n                    data-faq-trigger>\n                    <h3 id=\"whats-the-difference-between-dns-server-not-responding-and-no-internet-connection\" class=\"faq-accordion__question\">\n                        What\u2019s the difference between \u201cDNS server not responding\u201d and no internet connection?                    <\/h3>\n                    <span class=\"faq-accordion__icon\" aria-hidden=\"true\">+<\/span>\n                <\/button>\n                <div class=\"faq-accordion__content-wrapper\">\n                    <div class=\"faq-accordion__content\">\n                        <div class=\"faq-accordion__content-inner\">\n                            <!-- wp:paragraph -->\n<p>If you have no internet, nothing loads at all. If your DNS isn\u2019t responding, you still have internet access, but your device can\u2019t translate domain names into IP addresses, so websites don\u2019t open.<\/p>\n<!-- \/wp:paragraph -->                        <\/div>\n                    <\/div>\n                <\/div>\n            <\/li>\n                    <li class=\"faq-accordion__item\">\n                <button \n                    class=\"faq-accordion__title\"\n                    type=\"button\"\n                    aria-expanded=\"false\"\n                    data-faq-trigger>\n                    <h3 id=\"can-antivirus-software-cause-dns-server-errors\" class=\"faq-accordion__question\">\n                        Can antivirus software cause DNS server errors?                    <\/h3>\n                    <span class=\"faq-accordion__icon\" aria-hidden=\"true\">+<\/span>\n                <\/button>\n                <div class=\"faq-accordion__content-wrapper\">\n                    <div class=\"faq-accordion__content\">\n                        <div class=\"faq-accordion__content-inner\">\n                            <!-- wp:paragraph -->\n<p>Rarely, yes. Some antivirus or firewall tools block or intercept DNS traffic for security scans. Try disabling them temporarily to check if they\u2019re the cause.<\/p>\n<!-- \/wp:paragraph -->                        <\/div>\n                    <\/div>\n                <\/div>\n            <\/li>\n                    <li class=\"faq-accordion__item\">\n                <button \n                    class=\"faq-accordion__title\"\n                    type=\"button\"\n                    aria-expanded=\"false\"\n                    data-faq-trigger>\n                    <h3 id=\"why-does-my-dns-server-not-respond-only-when-using-wi-fi\" class=\"faq-accordion__question\">\n                        Why does my DNS server not respond only when using Wi-Fi?                    <\/h3>\n                    <span class=\"faq-accordion__icon\" aria-hidden=\"true\">+<\/span>\n                <\/button>\n                <div class=\"faq-accordion__content-wrapper\">\n                    <div class=\"faq-accordion__content\">\n                        <div class=\"faq-accordion__content-inner\">\n                            <!-- wp:paragraph -->\n<p>The router might be assigning bad DNS settings, or the Wi-Fi network itself is unstable. Try connecting over Ethernet or switching to a public DNS server manually.<\/p>\n<!-- \/wp:paragraph -->                        <\/div>\n                    <\/div>\n                <\/div>\n            <\/li>\n                    <li class=\"faq-accordion__item\">\n                <button \n                    class=\"faq-accordion__title\"\n                    type=\"button\"\n                    aria-expanded=\"false\"\n                    data-faq-trigger>\n                    <h3 id=\"why-does-my-dns-server-not-respond-when-using-a-vpn\" class=\"faq-accordion__question\">\n                        Why does my DNS server not respond when using a VPN?                    <\/h3>\n                    <span class=\"faq-accordion__icon\" aria-hidden=\"true\">+<\/span>\n                <\/button>\n                <div class=\"faq-accordion__content-wrapper\">\n                    <div class=\"faq-accordion__content\">\n                        <div class=\"faq-accordion__content-inner\">\n                            <!-- wp:paragraph -->\n<p>Some VPNs replace your DNS resolver but fail to handle the queries correctly. Check the VPN\u2019s DNS settings or disable it temporarily to confirm.<\/p>\n<!-- \/wp:paragraph -->                        <\/div>\n                    <\/div>\n                <\/div>\n            <\/li>\n                    <li class=\"faq-accordion__item\">\n                <button \n                    class=\"faq-accordion__title\"\n                    type=\"button\"\n                    aria-expanded=\"false\"\n                    data-faq-trigger>\n                    <h3 id=\"is-changing-dns-servers-safe\" class=\"faq-accordion__question\">\n                        Is changing DNS servers safe?                    <\/h3>\n                    <span class=\"faq-accordion__icon\" aria-hidden=\"true\">+<\/span>\n                <\/button>\n                <div class=\"faq-accordion__content-wrapper\">\n                    <div class=\"faq-accordion__content\">\n                        <div class=\"faq-accordion__content-inner\">\n                            <!-- wp:paragraph -->\n<p>Yes. You\u2019re simply choosing a different provider to resolve domain names. Stick to trusted public options like Google, Cloudflare, or Quad9 to avoid privacy or reliability issues.<\/p>\n<!-- \/wp:paragraph -->                        <\/div>\n                    <\/div>\n                <\/div>\n            <\/li>\n                    <li class=\"faq-accordion__item\">\n                <button \n                    class=\"faq-accordion__title\"\n                    type=\"button\"\n                    aria-expanded=\"false\"\n                    data-faq-trigger>\n                    <h3 id=\"what-is-the-fastest-dns-server-for-my-location\" class=\"faq-accordion__question\">\n                        What is the fastest DNS server for my location?                    <\/h3>\n                    <span class=\"faq-accordion__icon\" aria-hidden=\"true\">+<\/span>\n                <\/button>\n                <div class=\"faq-accordion__content-wrapper\">\n                    <div class=\"faq-accordion__content\">\n                        <div class=\"faq-accordion__content-inner\">\n                            <!-- wp:paragraph -->\n<p>It depends on where you are. Use free tools like <strong>DNSPerf<\/strong>, <strong>Namebench<\/strong>, or <strong>GRC\u2019s DNS Benchmark<\/strong> to measure latency from your network and pick the quickest.<\/p>\n<!-- \/wp:paragraph -->                        <\/div>\n                    <\/div>\n                <\/div>\n            <\/li>\n                    <li class=\"faq-accordion__item\">\n                <button \n                    class=\"faq-accordion__title\"\n                    type=\"button\"\n                    aria-expanded=\"false\"\n                    data-faq-trigger>\n                    <h3 id=\"how-do-i-check-if-my-isps-dns-is-down\" class=\"faq-accordion__question\">\n                        How do I check if my ISP\u2019s DNS is down?                    <\/h3>\n                    <span class=\"faq-accordion__icon\" aria-hidden=\"true\">+<\/span>\n                <\/button>\n                <div class=\"faq-accordion__content-wrapper\">\n                    <div class=\"faq-accordion__content\">\n                        <div class=\"faq-accordion__content-inner\">\n                            <!-- wp:paragraph -->\n<p>Try loading sites with a public DNS (like 1.1.1.1 or 8.8.8.8). If they work there but not with your default settings, your ISP\u2019s DNS is likely having issues.<\/p>\n<!-- \/wp:paragraph -->                        <\/div>\n                    <\/div>\n                <\/div>\n            <\/li>\n                    <li class=\"faq-accordion__item\">\n                <button \n                    class=\"faq-accordion__title\"\n                    type=\"button\"\n                    aria-expanded=\"false\"\n                    data-faq-trigger>\n                    <h3 id=\"why-does-flushing-the-dns-cache-fix-the-issue-sometimes\" class=\"faq-accordion__question\">\n                        Why does flushing the DNS cache fix the issue sometimes?                    <\/h3>\n                    <span class=\"faq-accordion__icon\" aria-hidden=\"true\">+<\/span>\n                <\/button>\n                <div class=\"faq-accordion__content-wrapper\">\n                    <div class=\"faq-accordion__content\">\n                        <div class=\"faq-accordion__content-inner\">\n                            <!-- wp:paragraph -->\n<p>Flushing deletes outdated or corrupted DNS entries stored on your device, forcing it to request fresh records from the server.<\/p>\n<!-- \/wp:paragraph -->                        <\/div>\n                    <\/div>\n                <\/div>\n            <\/li>\n                    <li class=\"faq-accordion__item\">\n                <button \n                    class=\"faq-accordion__title\"\n                    type=\"button\"\n                    aria-expanded=\"false\"\n                    data-faq-trigger>\n                    <h3 id=\"should-i-use-ipv4-or-ipv6-dns-servers\" class=\"faq-accordion__question\">\n                        Should I use IPv4 or IPv6 DNS servers?                    <\/h3>\n                    <span class=\"faq-accordion__icon\" aria-hidden=\"true\">+<\/span>\n                <\/button>\n                <div class=\"faq-accordion__content-wrapper\">\n                    <div class=\"faq-accordion__content\">\n                        <div class=\"faq-accordion__content-inner\">\n                            <!-- wp:paragraph -->\n<p>Most networks still rely primarily on IPv4, but enabling IPv6 DNS can improve compatibility if your ISP supports it. If in doubt, use both.<\/p>\n<!-- \/wp:paragraph -->                        <\/div>\n                    <\/div>\n                <\/div>\n            <\/li>\n                    <li class=\"faq-accordion__item\">\n                <button \n                    class=\"faq-accordion__title\"\n                    type=\"button\"\n                    aria-expanded=\"false\"\n                    data-faq-trigger>\n                    <h3 id=\"why-does-dns-work-on-mobile-data-but-not-on-wi-fi\" class=\"faq-accordion__question\">\n                        Why does DNS work on mobile data but not on Wi-Fi?                    <\/h3>\n                    <span class=\"faq-accordion__icon\" aria-hidden=\"true\">+<\/span>\n                <\/button>\n                <div class=\"faq-accordion__content-wrapper\">\n                    <div class=\"faq-accordion__content\">\n                        <div class=\"faq-accordion__content-inner\">\n                            <!-- wp:paragraph -->\n<p>Mobile data uses your carrier\u2019s DNS, while Wi-Fi uses your router\u2019s. If it fails only on Wi-Fi, the problem is likely your router or ISP DNS.<\/p>\n<!-- \/wp:paragraph -->                        <\/div>\n                    <\/div>\n                <\/div>\n            <\/li>\n                    <li class=\"faq-accordion__item\">\n                <button \n                    class=\"faq-accordion__title\"\n                    type=\"button\"\n                    aria-expanded=\"false\"\n                    data-faq-trigger>\n                    <h3 id=\"can-a-router-cause-dns-server-not-responding-errors\" class=\"faq-accordion__question\">\n                        Can a router cause \u201cDNS server not responding\u201d errors?                    <\/h3>\n                    <span class=\"faq-accordion__icon\" aria-hidden=\"true\">+<\/span>\n                <\/button>\n                <div class=\"faq-accordion__content-wrapper\">\n                    <div class=\"faq-accordion__content\">\n                        <div class=\"faq-accordion__content-inner\">\n                            <!-- wp:paragraph -->\n<p>Yes. Outdated firmware, overheated hardware, or incorrect DHCP settings can all prevent your router from forwarding DNS requests properly. Reboot or update it to test.<\/p>\n<!-- \/wp:paragraph -->                        <\/div>\n                    <\/div>\n                <\/div>\n            <\/li>\n            <\/ul>\n<\/div>\n\n<script type=\"application\/ld+json\">\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What\u2019s the difference between slow DNS and no response?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Slow DNS means the server eventually answers, just not quickly enough, causing delays when loading pages. \u201cNo response\u201d means your device never receives an answer, so the request times out entirely.\"}},{\"@type\":\"Question\",\"name\":\"Should I always use Google or Cloudflare DNS?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"They\u2019re reliable and fast for most users, but not always the best choice everywhere. 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Reboot or update it to test.\"}}]}<\/script>\n\n\n\n<div class=\"wp-block-generatepress-child-further-reading further-reading-block\"><a href=\"https:\/\/uptimerobot.com\/knowledge-hub\/monitoring\/dns-monitoring-the-complete-guide\/\" class=\"further-reading-card\" target=\"_blank\" rel=\"noopener noreferrer\"><div class=\"further-reading-content\"><span class=\"further-reading-label\">FURTHER READING<\/span><h3 class=\"further-reading-title\">DNS Monitoring: The Complete Guide to Detecting Issues Before They Cause Outages<\/h3><\/div><div class=\"further-reading-icon\"><svg width=\"24\" height=\"24\" viewBox=\"0 0 24 24\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M18 13V19C18 19.5304 17.7893 20.0391 17.4142 20.4142C17.0391 20.7893 16.5304 21 16 21H5C4.46957 21 3.96086 20.7893 3.58579 20.4142C3.21071 20.0391 3 19.5304 3 19V8C3 7.46957 3.21071 6.96086 3.58579 6.58579C3.96086 6.21071 4.46957 6 5 6H11\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><\/path><path d=\"M15 3H21V9\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><\/path><path d=\"M10 14L21 3\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><\/path><\/svg><\/div><\/a><\/div>\n\n\n\n<div class=\"wp-block-generatepress-child-further-reading further-reading-block\"><a href=\"https:\/\/uptimerobot.com\/knowledge-hub\/devops\/dns-record-types-explained\/\" class=\"further-reading-card\" target=\"_blank\" rel=\"noopener noreferrer\"><div class=\"further-reading-content\"><span class=\"further-reading-label\">FURTHER READING<\/span><h3 class=\"further-reading-title\">DNS Record Types: Explained<\/h3><\/div><div class=\"further-reading-icon\"><svg width=\"24\" height=\"24\" viewBox=\"0 0 24 24\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M18 13V19C18 19.5304 17.7893 20.0391 17.4142 20.4142C17.0391 20.7893 16.5304 21 16 21H5C4.46957 21 3.96086 20.7893 3.58579 20.4142C3.21071 20.0391 3 19.5304 3 19V8C3 7.46957 3.21071 6.96086 3.58579 6.58579C3.96086 6.21071 4.46957 6 5 6H11\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><\/path><path d=\"M15 3H21V9\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><\/path><path d=\"M10 14L21 3\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><\/path><\/svg><\/div><\/a><\/div>\n\n\n\n<div class=\"wp-block-generatepress-child-further-reading further-reading-block\"><a href=\"https:\/\/uptimerobot.com\/knowledge-hub\/devops\/dns-redirect-guide\/\" class=\"further-reading-card\" target=\"_blank\" rel=\"noopener noreferrer\"><div class=\"further-reading-content\"><span class=\"further-reading-label\">FURTHER READING<\/span><h3 class=\"further-reading-title\">What Is a DNS Redirect? A Comprehensive Guide to How It Works and Best Practices<\/h3><\/div><div class=\"further-reading-icon\"><svg width=\"24\" height=\"24\" viewBox=\"0 0 24 24\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M18 13V19C18 19.5304 17.7893 20.0391 17.4142 20.4142C17.0391 20.7893 16.5304 21 16 21H5C4.46957 21 3.96086 20.7893 3.58579 20.4142C3.21071 20.0391 3 19.5304 3 19V8C3 7.46957 3.21071 6.96086 3.58579 6.58579C3.96086 6.21071 4.46957 6 5 6H11\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><\/path><path d=\"M15 3H21V9\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><\/path><path d=\"M10 14L21 3\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><\/path><\/svg><\/div><\/a><\/div>\n\n\n\n<div class=\"wp-block-generatepress-child-further-reading further-reading-block\"><a href=\"https:\/\/uptimerobot.com\/knowledge-hub\/devops\/understanding-dns-queries-a-complete-guide\/\" class=\"further-reading-card\" target=\"_blank\" rel=\"noopener noreferrer\"><div class=\"further-reading-content\"><span class=\"further-reading-label\">FURTHER READING<\/span><h3 class=\"further-reading-title\">Understanding DNS Queries: A Complete Guide<\/h3><\/div><div class=\"further-reading-icon\"><svg width=\"24\" height=\"24\" viewBox=\"0 0 24 24\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M18 13V19C18 19.5304 17.7893 20.0391 17.4142 20.4142C17.0391 20.7893 16.5304 21 16 21H5C4.46957 21 3.96086 20.7893 3.58579 20.4142C3.21071 20.0391 3 19.5304 3 19V8C3 7.46957 3.21071 6.96086 3.58579 6.58579C3.96086 6.21071 4.46957 6 5 6H11\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><\/path><path d=\"M15 3H21V9\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><\/path><path d=\"M10 14L21 3\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><\/path><\/svg><\/div><\/a><\/div>\n","protected":false},"excerpt":{"rendered":"<p>You&#8217;re trying to load a website, but nothing happens. Maybe it spins forever, maybe you get a cryptic error. You check your internet, and everything else seems fine.&nbsp; The culprit? Often, it&#8217;s a DNS server not responding.&nbsp; This issue can crop up out of nowhere and bring your workflow to a halt, especially if you&#8217;re [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14],"tags":[],"class_list":["post-637","post","type-post","status-publish","format-standard","hentry","category-monitoring"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>DNS Server Not Responding: Causes, Fixes, and Prevention Guide - UptimeRobot Knowledge Hub<\/title>\n<meta name=\"description\" content=\"Learn why \u201cDNS server not responding\u201d occurs and how to fix it on Windows, Mac, Linux, routers, and mobile devices.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/uptimerobot.com\/knowledge-hub\/monitoring\/how-to-fix-dns-server-not-responding-error\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"DNS Server Not Responding: Causes, Fixes, and Prevention Guide - 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