Free NS Record Checker
Look up the authoritative nameservers for a domain.
Need to monitor this across every client domain you manage? ActiScan does bulk scanning, scoring, and white-labeled reporting for MSPs.
What Is an NS Record?
An NS (Name Server) record names the nameservers authoritative for a domain or subdomain – who actually gets asked for the rest of its DNS records. Every other record type (A, MX, TXT, and so on) only takes effect if it's published on the nameservers this record points to.
- •Delegating a domain (or subdomain) to a specific DNS host
- •Confirming a DNS migration between providers actually completed
- •Diagnosing why DNS changes made at one host aren't taking effect – they may be published on the wrong nameservers entirely
Example
ns1.example-dns-host.com.
One of typically two or more nameservers a domain publishes for redundancy.
Things to Know
Mismatched NS is a common root cause
If the nameservers here don't match what your registrar or DNS host's dashboard shows, the domain is delegated elsewhere – any record changes made in the dashboard you're looking at will never take effect until the delegation matches.
Registrar vs. authoritative NS can differ
Your registrar's own control panel sometimes shows a different NS list than what's actually published in DNS – this checker shows the live, authoritative answer, not the registrar's records of what it thinks it set.
Next Steps
General DNS Checker
Look up A, AAAA, MX, TXT, CNAME, SOA, CAA, or PTR records too.
General DNS Checker →SOA Record Checker
See the zone's primary nameserver, admin contact, and refresh timers.
SOA Record Checker →Frequently Asked Questions
Is this NS record checker free?
Yes – look up NS records for any domain, for free, no signup required.
Why do I see two or more nameservers?
That's normal and expected – multiple nameservers provide redundancy, so DNS still resolves if one is unreachable.
I changed my nameservers but nothing changed
NS changes at the registrar level can take up to 24-48 hours to propagate globally, since resolvers cache the parent zone's delegation record too.
What resolver does this use?
Cloudflare's public DNS-over-HTTPS resolver. Every lookup is live, not a cached snapshot.