Free NameServer Lookup.
Look up NS records for any domain in seconds. Verify nameservers, confirm TTL values, and spot misconfigurations before they turn into downtime.
Nameserver Lookup.
How does Nameserver Lookup work?
Enter a domain name (e.g., example.com) and click “Check”. Our tool queries DNS for NS records and returns the authoritative nameservers for that domain—along with TTL (time-to-live)—so you can validate changes and troubleshoot caching.
What are nameservers (NS records)?
NS records tell the internet which nameservers are authoritative for your domain. In other words, they define where your domain’s DNS zone is hosted and which provider is responsible for answering DNS queries (A, AAAA, CNAME, MX, TXT, etc.).
When should you check nameservers?
- After switching DNS providers (e.g., Cloudflare, Route 53, Google Domains)
- When DNS changes aren’t taking effect as expected
- When a domain points to the wrong website or email provider
- When troubleshooting DNS delegation or registrar settings
Nameserver vs DNS records (quick clarification)
Nameservers (NS): Where your DNS is hosted (who answers DNS queries)
Records (A/CNAME/MX/TXT): The actual instructions inside your DNS zone
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Start monitoring for freeFrequently asked questions.
What is a nameserver (NS record)?
Nameservers are the DNS servers that are authoritative for your domain—the place where the “real” DNS records (A, MX, CNAME, TXT, etc.) live.
How do I find out which DNS provider is authoritative for my domain?
Run a nameserver lookup and check the NS results—those are the servers the internet is using to answer DNS queries for your domain.
Why do WHOIS nameservers and NS lookup results sometimes differ?
WHOIS reflects what’s set at the registrar/TLD level, while an NS lookup queries DNS data—during changes or misconfigurations, they can temporarily disagree.
How long do nameserver changes take to propagate?
Nameserver (delegation) changes typically take up to 24–48 hours, depending on caching and TTL at different levels.
What are glue records, and when do I need them?
Glue records are registry-level IP mappings for nameservers, needed when your nameserver is under the same domain it serves (to avoid a circular lookup).
I changed nameservers—why is my website/email still using the old DNS?
Most often it’s caching (propagation), or you’re updating records in a DNS provider that’s not the authoritative one listed in your NS results.
How many nameservers should a domain have?
Most domains use two or more nameservers for redundancy, so DNS continues to work if one server goes down.
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