ICANN Lookup
ICANN registration data lookup tool.
ICANN Lookup is a registration data lookup tool for retrieving current registration data for domain names and Internet number resources. It queries the Registration Data Access Protocol (RDAP), developed by the IETF as an eventual replacement for the WHOIS (port 43) protocol, providing more secure access, a standardized format, internationalization support, and differentiated access to registration data. Results are returned in real time from registry operators and registrars; if a domain query is not available in RDAP, it falls back to the corresponding gTLD registry's WHOIS service.
The tool supports domain name and Internet number resource lookups, with a multilingual interface. For nonpublic generic top-level domain registration data not available through the tool, users with a legitimate interest—such as law enforcement, intellectual property professionals, consumer protection advocates, cybersecurity professionals, and government officials—can request access through the Registration Data Request Service (RDRS). The tool is available for public use under ICANN's Privacy Policy, Terms of Service, and tool-specific Terms of Use; no pricing, plans, or editions are indicated.
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