IP2WHOIS
Instant domain intelligence at your fingertips.
IP2WHOIS is a domain intelligence service that provides WHOIS lookups for registered domains and reverse lookups that identify domains hosted on a given IP address. It addresses the need to retrieve registrant details, registrar records, key dates, and domain status for investigations, monitoring, and automated domain tracking.
The service offers a Domain WHOIS Lookup Tool and a Hosted Domain API, both available as RESTful APIs returning JSON, with reverse IP lookups supporting IPv4 and IPv6. SDKs cover PHP, Ruby, Python, Node.js, Go, Deno, Kotlin, .NET, Java, Lua, Erlang, D, Scala, OCaml, and R. Integrations include Make, Pipedream, Zapier, Command Line, Integrately, Pabbly, Quickwork, Steampipe, viaSocket, OttoKit, and MCP for AI agents, along with a Punycode Converter and bots for Slack, Discord, Reddit, Telegram, Webex, and ChatGPT.
It is aimed at cybersecurity teams, investigators, analysts, enterprises, SaaS providers, researchers, and developers. A free account is available for sign-up.
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