Free WHOIS Lookup
Look Up WHOIS Details for Any Domain
Enter a domain or IP address to see its registration details — hosting provider, organization, ASN, network information, and company data.
Try: example.com · github.com · cloudflare.com
Registration Details
github.com
GitHub, Inc.
AS36459
IP Address
140.82.121.3
Organization
AS36459 GitHub, Inc.
Timezone
Europe/Berlin
Postal Code
60306
Network (ASN)
ASN
AS36459
Name
GitHub, Inc.
Domain
github.com
Type
hosting
Geolocation
Location
Frankfurt am Main, Hesse, Germany
Coordinates
50.1155,8.6842
Country Code
DE
How it works
Understanding WHOIS & Network Registration
WHOIS databases maintain records about who is responsible for domain names and IP address blocks. Originally created in the 1980s, WHOIS remains one of the primary tools for investigating domain ownership, tracking abuse, and verifying the legitimacy of online services.
Network registration data — including ASN assignments, IP block ownership, and organizational details — is managed by five Regional Internet Registries (RIRs): ARIN, RIPE NCC, APNIC, AFRINIC, and LACNIC. This data helps identify the companies and ISPs operating behind any IP address.
FAQ
WHOIS Lookup FAQ
Common questions about WHOIS data and domain registration.
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