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
cloudflare.com
Cloudflare, Inc.
AS13335
IP Address
104.16.132.229
Organization
AS13335 Cloudflare, Inc.
Timezone
America/Los_Angeles
Postal Code
94107
Network (ASN)
ASN
AS13335
Name
Cloudflare, Inc.
Domain
cloudflare.com
Type
hosting
Geolocation
Location
San Francisco, California, United States
Coordinates
37.7621,-122.3971
Country Code
US
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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