Check WHOIS Information
Enter a domain (example.com), an IP address (8.8.8.8 or an IPv6 address), or an AS number (AS15169).
Status: Waiting for input…
About WHOIS
WHOIS is the public record of who registered a domain, who holds a block of IP addresses, and who operates an AS number. This tool uses RDAP (Registration Data Access Protocol), the structured successor to the old WHOIS text format.
Where your query goes. Your browser sends the query to our server, which looks up the authoritative registry for it in IANA’s bootstrap registries and asks that registry directly — Verisign for .com, Nominet for .uk, RIPE or ARIN for IP ranges and AS numbers. The registry necessarily sees the query, because it holds the record. We do not store it.
Note: registrars redact personal data under GDPR, so individual registrants usually show as hidden. Organisation records are normally public.