A Dumb WhoIs.

A simple web application for looking up WHOIS, IP, and ASN information using free APIs. The application automatically detects the type of query and provides formatted results with a clean, modern UI that supports both light and dark modes.

The best and most versatile OSINT utility for retrieving geolocation, DNS, WHOIS, phone, email, data breach information and much more (20 features). Perfect for investigators, pentesters, or anyone looking for an effective reconnaissance / OSINT tool.

The OWASP Amass Project performs network mapping of attack surfaces and external asset discovery using open source information gathering and active reconnaissance techniques.

The OWASP Amass Project has developed a framework to help information security professionals perform network mapping of attack surfaces and external asset discovery using open source intelligence gathering and reconnaissance techniques.

OWASP Amass.

RDAP command line client. OpenRDAP is a command line client for the Registration Data Access Protocol, written in Go.

RDAP is a replacement for WHOIS, which provides domain name & IP address registration information in JSON format over HTTP.

OpenRDAP @ GitHub.