OpenRDAP – command line client for the Registration Data Access Protocol

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

It is designed to retrieve internet registration data from RDAP services, covering domains, IP addresses, autonomous system numbers, entities, and nameservers. The software can present results in human-readable text, structured JSON, raw server responses, and WHOIS-style output for domain queries.

This is free and open source software.

Key Features

  • Command line RDAP client.
  • Supports output formats including text, JSON, and WHOIS style.
  • Supports query types including ip, domain, autnum, nameserver, entity, help, url, domain-search, domain-search-by-nameserver, domain-search-by-nameserver-ip, nameserver-search, nameserver-search-by-ip, entity-search, and entity-search-by-handle.
  • Automatic server detection for ip, domain, autnum, and entities.
  • Supports object tags.
  • Optional bootstrap cache using ~/.openrdap by default.
  • Supports X.509 client authentication.

Website: github.com/openrdap/rdap
Support:
Developer: Tom Harwood
License: MIT License

OpenRDAP is written in Go. Learn Go with our recommended free books and free tutorials.


Related Software

Alternatives to whois
GNOME NettoolPerforms ping, netstat, traceroute, port scans, lookup, and whois (GUI)
jwhoisImproved whois client
ipwhoisRetrieve and parse whois data for IPv4 and IPv6 addresses
OpenRDAPCommand line RDAP client implementation in Go
quienTerminal-based domain intelligence toolkit
rdapperSimple console-based RDAP client
rdapper (TypeScript)Node library that performs domain registration lookups

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