fetchwhois
Powered by the official IANA RDAP protocol

Nameserver Lookup

Find the authoritative nameservers for any domain in seconds. FetchWhois reads the RDAP registration record to show the nameserver hostnames exactly as registered at the TLD registry — the definitive source for DNS delegation data.

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Instant results

Real-time WHOIS domain lookups resolved directly from authoritative RDAP servers — no queues, no waiting.

ICANN-grade accuracy

Every ICANN lookup pulls structured data straight from the registry and registrar, following the official RDAP standard.

Hundreds of TLDs

From .com and .org to .io, .dev and country-code domains — powered by the IANA bootstrap registry.

Private & simple

No sign-up and no domain upsells. Just clean, trustworthy WHOIS results every time.

How to look up a domain's nameservers

Registry-level nameserver data from the live RDAP record.

1Step 1

Enter the domain name

Type the domain name into the search box. Nameservers are registered at the apex-domain level, so enter example.com rather than a subdomain.

2Step 2

FetchWhois reads nameserver data from the registry

We query the authoritative RDAP server for the TLD registry and extract the nameserver hostnames (ldhName values) from the domain's registration record.

3Step 3

View the current nameserver list

The nameservers appear in the results as a list of hostnames (for example, ns1.cloudflare.com, ns2.cloudflare.com). These are the servers the registry delegates DNS authority to for the domain.

What are nameservers and why does a nameserver lookup matter?

Nameservers (NS records) are the servers that the domain registry delegates DNS authority to for a domain. When someone visits your website or sends you an email, their computer asks the root DNS servers which nameservers are responsible for your domain, then queries those nameservers for the actual IP address or mail server. The nameservers shown in a WHOIS or RDAP record are the registry-level delegation — they are the first stop in the DNS resolution chain.

A nameserver lookup via WHOIS is different from a DNS NS record query. WHOIS and RDAP return the nameservers as registered at the registry, while a DNS query returns what the nameservers themselves serve. For most domains these should match, but briefly after a nameserver change the registry record may differ from what is propagated in DNS. The RDAP record is authoritative for the registered delegation.

Knowing a domain's nameservers tells you which DNS provider manages the domain's DNS zone. Common nameserver hosts include Cloudflare (ns1.cloudflare.com), Amazon Route 53 (*.awsdns-*.com), and Google Cloud DNS (ns-cloud-*.googledomains.com). If you are troubleshooting DNS issues or verifying that a DNS migration has completed, the RDAP nameserver record is the definitive check.

Nameserver Lookup — Frequently Asked Questions

Everything you need to know about WHOIS, ICANN and RDAP domain lookups.