About W.is
W.is is a free RDAP and WHOIS lookup tool for domain names. Enter a domain and see who it is registered with, when it was created and when it expires, which status codes and name servers it has — in a clean, readable page, with no sign-up.
What W.is does
Every domain name has a registration record kept by the registry that manages its top-level domain, such as Verisign for .com or DENIC for .de. W.is asks the registry directly and turns its answer into a single, consistent result page.
You can look up domain names under generic and country-code TLDs alike, including internationalized (IDN) domains — for example google.com. If you type a bare name without a dot, W.is looks up the .com domain.
Every result has its own address (for example w.is/example.com), so you can bookmark it or send it to someone.
How a lookup works
W.is prefers RDAP, the Registration Data Access Protocol that replaces WHOIS, and falls back to WHOIS where RDAP is not available. If you are new to RDAP, start with What is RDAP? and RDAP vs WHOIS.
- Domains with RDAP. W.is keeps a built-in map of registry RDAP servers, derived from IANA's root zone database and RDAP bootstrap registry and checked by hand for a few registries. It currently covers 1,207 TLDs across 594 RDAP endpoints — see the full RDAP server list. The query goes straight to the registry that operates the TLD.
- Filling gaps. If the RDAP answer is missing the registrar, the creation date or the name servers, W.is also asks the WHOIS server and merges the two answers, preferring the RDAP values.
- Not found. If the registry's RDAP server says the domain does not exist (HTTP 404), W.is reports it as not found. That usually means the name is not registered, although it may still be reserved or blocked by the registry.
- WHOIS fallback. If the RDAP server fails for another reason, or W.is has no RDAP endpoint for the TLD, it queries the registry's WHOIS server on port 43 instead — see the WHOIS server list.
Because lookups go to the authoritative registry servers, you see the current registration record rather than an old copy from a third-party database.
What you get in a result
- Registrar details: name, website and IANA registrar ID.
- Key dates: creation, last update and expiration, with a “Newly Registered” or “Expiring Soon” label when either is within 30 days. Read more about domain expiration and renewal.
- Domain status codes such as
clientTransferProhibited, linked to plain-English explanations in the domain status code reference, plus labels for pending deletions and transfers. - Name servers (each one copyable with a click) and the DNSSEC state.
- Registrant details such as organization and country when the registry publishes them. Many registries now redact personal contact data — our guide on finding a domain owner explains your options.
- The raw RDAP or WHOIS response, which you can copy or download as a text file, and a label showing which protocol the data came from.
- A screenshot button that saves the result card as an image.
- Price hints for many domains — registration and renewal prices and whether the name is premium — with a link to compare registrars on our sister site TLDhub.com.
Coverage
W.is tracks every top-level domain in IANA's root zone database. The figures below come from the data W.is uses for lookups (IANA records updated up to 2026-09-23).
- Active TLDs
- 1,435
- TLDs with RDAP
- 1,207
- TLDs with an IANA WHOIS server
- 873
- Registry RDAP endpoints
- 594
Of the 1,435 active TLDs, 1,367 have an RDAP endpoint, a WHOIS server or both; the IANA database also lists 160 retired, unused or test TLDs. RDAP is close to universal among generic TLDs (1,126 of 1,128), because ICANN requires it of gTLD registries and registrars and, since 28 January 2025, no longer requires registrars or most registries to run WHOIS. Country-code TLDs set their own rules: W.is has RDAP endpoints for only 81 of 306 (from IANA's bootstrap registry plus a few added by hand), which is why the WHOIS fallback still matters. Browse them all in the TLD list.
Guides and references
- TLD List — every top-level domain with its registry type, RDAP and WHOIS server.
- RDAP Servers — the registry RDAP endpoints W.is queries, grouped by server.
- WHOIS Servers — the port-43 WHOIS servers published by IANA for each TLD.
- Domain Status Codes — what clientHold, serverTransferProhibited and the other EPP codes mean.
- What is RDAP? — a plain-English introduction to the Registration Data Access Protocol.
- RDAP vs WHOIS — how the two protocols differ and why the industry is moving to RDAP.
- Domain Expiration — how to check an expiry date and what happens after a domain expires.
- Find a Domain Owner — what registration data can and cannot tell you about who owns a domain.
Privacy in short
There are no accounts and no sign-up. Lookups are made from our servers, so registries see our request, not your IP address. Your personal search history is kept in your own browser. Successful domain lookups may also appear, with nothing about who searched, in a public list of recently searched domains. The details, including analytics, are in our Privacy Policy, and the rules for using the service are in the Terms of Service.
More tools from the W.is family
W.is is one of a set of small, free tools for people who work with domains and networks:
- IP.imFree IP address lookup tool
- T.imShortest URL shortener
- DNS.isDNS lookup tool
- Text.isMarkdown pastebin
- Base64.isBase64 Decode tool
- Trueurl.comFree URL redirect checker
- Favicon.isFree favicon API
- Seek.domainsBulk Domain Checker
- QR.toolsQRcode tools
- 2048.ing2048 Game
- TLDhub.comCheapest Domain checker
- Date.isWorld Date Time
- IP.cxIP score lookup
- VPS.ssVPS Value Calculator
- eSIM2qr.comeSIM QR Generator
- eSIM.NowTravel eSIM data plan
Contact and support
Found a wrong result, a TLD we don't handle well, or have an idea? Email us at hi#w.is (replace # with @). Please include the query you ran so we can reproduce it.
W.is is free to use. If it saves you time, you can support its running costs with a Buy me a coffee donation.
W.is is built on the open-source next-whois-ui project. Thanks to its authors and contributors.