Find the authoritative nameservers that control a domain's DNS.
Enter a domain to look up its NS records.
Nameservers (NS records) are the authoritative servers that answer DNS queries for a domain. They hold the master copy of your zone, so whoever controls the nameservers controls the domain's DNS.
Checking NS records confirms which provider a domain's DNS is delegated to, which is essential when migrating DNS or diagnosing propagation issues. This tool lists every authoritative nameserver.
At least two, on separate infrastructure, for redundancy. Most providers give you two to four. If one nameserver is unreachable, resolvers try the others, so multiple nameservers keep your domain resolvable.
Changing nameservers delegates DNS to a new provider. Propagation can take up to 48 hours as resolvers and the registry update. During that window, some users may still hit the old provider's records.
Not necessarily. Your registrar is where you bought the domain; the nameservers are where DNS is hosted. They are often the same company, but you can host DNS anywhere regardless of the registrar.
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