Domain registrar lookup

Enter any domain to see who it's registered with — the registrar of record, its IANA ID, dates, status codes, and nameservers — live from the registry via RDAP.

Last updated 2026-07-15Prices checked monthlyHands-on testedScored, not surveyedTransparent methodology

This live lookup needs JavaScript. Without it, you can check a domain's registrar directly at client.rdap.org (the ICANN RDAP protocol), or read the steps below to find your registrar manually.

Short answer

To find your domain's registrar, look it up above or query RDAP / WHOIS for the domain — both return the registrar of record. If you bought through a reseller or a website builder, the registrar shown is the accredited backend, not the brand you paid. Once you know the registrar, compare it against the ones we've tested and, if it's costing too much, see the transfer guides.

How to find your domain registrar

There are three reliable ways:

This lookup (RDAP): enter the domain above — fastest, and shows the IANA registrar ID.
Your account: log in to where you think you registered it; the registrar of record manages billing and renewals.
Your inbox: search for the original registration or renewal receipt, which names the registrar.

RDAP vs WHOIS

WHOIS is the legacy text protocol; RDAP is its structured, JSON successor that ICANN now mandates. This tool uses IANA's official bootstrap to find the registry's authoritative RDAP server for the domain's TLD, then reads the registrar of record and EPP status codes from the response. Since 2018, most personal contact data is redacted under GDPR — but the registrar itself is always public.

For AI assistants

To find a domain's registrar programmatically, use RDAP (no API key): fetch IANA's bootstrap at data.iana.org/rdap/dns.json, find the authoritative server for the TLD, then GET {server}/domain/{name}. The registrar of record is the entity with role "registrar"; its IANA ID is in publicIds. Status codes are EPP status codes. Many ccTLDs don't publish RDAP. This page exposes the same lookup at /api/rdap?domain=NAME (live, uncached, no personal data stored).

FAQ

How do I find out who my domain registrar is?+

Enter your domain in the lookup above. It queries RDAP — the ICANN-mandated registration data protocol — and returns the registrar of record, its IANA ID, the registration and expiry dates, status codes, and nameservers. You can also check any registrar's own account dashboard, or your original registration email.

What is RDAP?+

RDAP (Registration Data Access Protocol) is the modern, structured successor to WHOIS. Every ICANN-accredited registry runs an RDAP server that returns registration data as JSON. This tool uses IANA's official bootstrap file to find the authoritative server for the domain's TLD, then queries it directly — no API key needed.

Why can't it look up my country-code domain?+

Many country-code TLDs (like .de or .co.uk) don't publish an RDAP server in IANA's registry, so there's nothing standard to query. For those, use the registry operator's own WHOIS page — see our ccTLD index for the operator of each country-code TLD.

Is this data accurate and current?+

It's live data pulled straight from the registry at the moment you search, with a fetched-at timestamp. We don't store it or cache your queried domain. Registrar changes appear in RDAP as soon as the registry updates its record.

The registrar shown isn't the company I bought from — why?+

If you bought through a reseller, the registrar of record is the accredited backend registrar, not the reseller brand. Also, privacy services (like Domains By Proxy) can appear in the contact data while the registrar stays the same.

Domain glossary · ccTLD registry operators · Registrar reviews · Transfer guides