Alternatives to ICANN Lookup

ICANN's web tool for looking up registration data for domain names and Internet number resources. The listings below can replace it for an important use case. Each note says what changes if you switch.

  • ICANN Lookup

    ICANN's web tool for looking up registration data for domain names and Internet number resources.

    FreeProprietaryWeb

Replacements

Listings that take over the same core job as ICANN Lookup.

  • Who.is

    A web lookup for WHOIS, RDAP, DNS records, nameservers and IP ownership of any domain.

    FreemiumProprietaryWeb

    Who.is combines WHOIS and RDAP lookups with DNS records and reverse nameserver searches, and offers paid monitoring and domain history reports.

  • Whois.com Lookup

    A free web lookup for domain and IP registration details such as owner, registrar and expiry.

    FreeProprietaryWeb

    Whois.com Lookup shows registrar, dates and nameservers for domains and IP addresses, but queries WHOIS rather than using RDAP like ICANN's tool.

  • DomainTools Whois Lookup

    A web-based WHOIS lookup for researching domain ownership, IP address history and domain availability.

    FreemiumProprietaryWeb

    DomainTools Whois Lookup adds IP address history, availability status and reverse WHOIS, with historical lookups aimed at paying users.

  • Whoxy

    A WHOIS lookup site and pay-as-you-go API with WHOIS history and reverse WHOIS search.

    FreemiumProprietaryWeb

    Whoxy adds WHOIS history and reverse WHOIS search by owner or email, and is mainly built around a pay-as-you-go API.

  • ViewDNS.info

    A web collection of more than 20 DNS, IP and domain lookup tools, with a paid API.

    FreemiumProprietaryWeb

    ViewDNS.info bundles WHOIS with more than 20 DNS and IP tools, including IP history and reverse WHOIS, plus a paid API.

Similar software

Related functionality, not a direct replacement.

  • DNSChecker

    A web tool that checks DNS propagation by querying public resolvers in many countries.

    FreeProprietaryWeb

  • intoDNS

    A free web tool that checks a domain's DNS and mail server health and configuration.

    FreeProprietaryWeb

  • Netcraft Site Report

    A free web lookup that shows the hosting, server software and technologies behind any website.

    FreeProprietaryWeb

  • DNSsy

    A free website that tests a domain's DNS health and offers live DNS, reverse, WHOIS and ping lookups.

    FreeProprietaryWeb

  • Zonemaster

    An open-source DNS validation tool that checks a domain's delegation and zone for configuration errors.

    FreeOpen sourceWebSelf-hosted

  • Google Admin Toolbox Dig

    Google's free web-based DNS lookup tool that queries a domain's records and shows the results.

    FreeProprietaryWeb