Free nameserver lookup
Find the nameservers of any domain
Enter a domain to see its authoritative nameservers, the DNS provider behind each one and the SOA record of its zone. A subdomain shows the nameservers of the zone it belongs to.
Try: github.com · shopify.com · microsoft.com
How it works
How nameservers work
Every domain is delegated to a set of nameservers. The registry of the top-level domain, such as Verisign for .com, stores which servers answer for each domain. Resolvers start at the root, follow that delegation and then ask the domain's own nameservers for its A, MX and TXT records.
Whoever runs those nameservers controls the domain's DNS. Moving to a new DNS provider means copying the records to the new provider first, then changing the nameservers at the registrar. Lower the TTLs a day before, so the switch reaches resolvers sooner.
- NS
- Lists the authoritative nameservers of the zone
- SOA
- Names the primary nameserver and the zone's admin mailbox
- Serial
- Changes with every edit, so secondaries know to sync
- Refresh
- How often secondary nameservers check for changes
FAQ
Nameserver lookup FAQ
Common questions about nameservers and DNS providers.
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Step-by-step guides on reading and using these results.
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Free lookup tool
Find the nameservers of any domain
Look up the nameservers of any domain and see which DNS provider runs them, such as Cloudflare, Amazon Route 53 or GoDaddy. Includes the zone's SOA record.