Nameserver lookup

Resolve a nameserver host, then see which domains in our lookup index point at it. The index grows as people look up WHOIS and DNS on DNSFetch — it is not a complete census of the internet.

Why this is not “every domain on Earth”

There is no public DNS query that lists every zone a nameserver is authoritative for. Commercial reverse-NS databases are built from historical crawls. DNSFetch indexes nameservers from WHOIS/RDAP lookups performed here, then lets you search that index. The more the site is used, the more complete this list becomes.