What a domain lookup shows
Registrar & dates
The registrar a domain is registered through, and its creation, last-updated and expiration dates.
Try: google.com, github.com
Domain expiration explainedStatus codes
EPP status codes such as clientTransferProhibited or redemptionPeriod, each linked to a plain-English explanation.
Try: amazon.com, wikipedia.org
Domain status codes explainedName servers & DNSSEC
The name servers a domain is delegated to and whether it is signed with DNSSEC, for gTLDs and ccTLDs.
Try: cloudflare.com, icann.org
RDAP and WHOIS servers by TLDPopular TLDs
RDAP and WHOIS servers, key facts and lookup instructions for each domain extension.
Guides & references
- What is RDAP?How the Registration Data Access Protocol works and why it replaces WHOIS.
- RDAP vs WHOISThe practical differences between the two protocols, side by side.
- Domain status codesWhat clientTransferProhibited, redemptionPeriod and other EPP statuses mean.
- Domain expirationHow to check when a domain expires and what happens after it lapses.
- Find a domain ownerWays to identify or contact a registrant when WHOIS data is redacted.
- RDAP serversThe RDAP endpoint W.is uses for every top-level domain that has one.
- WHOIS serversThe port 43 WHOIS server for each TLD, from the IANA root zone database.
Why W.is
RDAP first, WHOIS fallback
Lookups use the authoritative RDAP server whenever W.is has one on file (from IANA's bootstrap registry plus a few tested by hand). If RDAP fails or returns incomplete data, W.is falls back to WHOIS and fills in the gaps.
1,200+ TLDs with RDAP
Built-in RDAP endpoints for more than 1,200 top-level domains, based on IANA's root zone database and RDAP bootstrap registry.
Free, no sign-up
No account, no login and no usage fees. Type a domain name and press Enter.
History stays in your browser
Your personal search history is stored in your browser's localStorage, not in an account on our servers. Successful domain lookups may also appear, with nothing about who searched, in the public list of recently searched domains (see our Privacy Policy).
See the full list of RDAP servers by TLD, or read more about W.is.
Frequently asked questions
What is W.is?
W.is is a free RDAP and WHOIS lookup tool for domain names. Enter a domain and it shows the public registration record in a clean, readable layout: the registrar, creation and expiration dates, status codes, name servers and DNSSEC state.
What is RDAP?
RDAP (Registration Data Access Protocol) is the IETF standard that succeeds WHOIS. Instead of free-form text over port 43, it returns structured JSON over HTTPS. ICANN requires it for all gTLD registries and registrars, and a growing number of country-code TLDs, such as .uk, offer it too.
Is W.is free to use?
Yes. Every lookup is free and needs no account or sign-up. Your personal search history is saved only in your own browser (localStorage), and you can remove entries at any time with the trash button under it. Successful domain lookups may also appear, with nothing about who searched, in the public "Recently Searched Domains" list; see our Privacy Policy for details.
Which domain extensions does W.is support?
Both generic TLDs such as .com, .org and .app and country-code TLDs such as .uk, .de and .io. W.is has built-in RDAP endpoints for more than 1,200 top-level domains, based on IANA's root zone database and RDAP bootstrap registry. Where it has no RDAP endpoint for an extension, such as .de or .io, it queries the registry's WHOIS server instead. The TLD list shows the RDAP and WHOIS server W.is uses for each extension.
Why is the domain owner's information redacted?
Since the EU General Data Protection Regulation (GDPR) took effect in May 2018, most gTLD registrars and many ccTLD registries hide personal data such as the registrant's name, email address, phone number and postal address in public WHOIS and RDAP output, and many domains also use a privacy or proxy service. The registrar, dates, status codes and name servers remain public, and for gTLD domains the registrar must offer a way to contact the registrant, such as a web form or an anonymized email address.
