Free WHOIS lookup
See who registered a domain, the registrar, creation and expiry dates, status codes and name servers. Personal contact details are redacted by default.
Try . Free, no account needed.
Need this at scale?
The same lookup is one API call at 1 credit / request (one credit is $0.0003 to $0.001 depending on volume), with failed requests free.
curl "https://api.gridlode.com/v1/domain/whois?domain=wikipedia.org" \
-H "Authorization: Bearer $GRIDLODE_KEY"FAQ
Why is the registrant's name hidden?
Since GDPR took effect in 2018, most registries and registrars redact personal registrant data. We also redact personal emails and phone numbers in raw WHOIS text by default, while keeping abuse contacts visible.
What is the difference between WHOIS and RDAP?
WHOIS is the original plain-text protocol on port 43. RDAP is its modern replacement: structured JSON over HTTPS with standard fields. Use our RDAP lookup for clean data and WHOIS for the raw registry text.
How fresh is the data?
Every lookup queries the registry live. Results can be cached for up to an hour on this free tool; the API lets you choose freshness with max_age.