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
~/.openrdapby 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 Nettool | Performs ping, netstat, traceroute, port scans, lookup, and whois (GUI) |
| jwhois | Improved whois client |
| ipwhois | Retrieve and parse whois data for IPv4 and IPv6 addresses |
| OpenRDAP | Command line RDAP client implementation in Go |
| quien | Terminal-based domain intelligence toolkit |
| rdapper | Simple console-based RDAP client |
| rdapper (TypeScript) | Node library that performs domain registration lookups |
Explore our carefully curated directory of recommended free and open source software, covering every major software category.The directory forms part of our extensive collection of articles for Linux enthusiasts. It includes hundreds of detailed reviews, together with free and open source alternatives to proprietary software from companies such as Google, Microsoft, Apple, Adobe, IBM, Cisco, Oracle, and Autodesk. LinuxLinks also covers interesting projects worth exploring, Linux-compatible hardware, free programming books and tutorials, and much more. Know a useful free and open source Linux application that we haven’t covered? Tell us about it using our submission form. |


Please read our Comment Policy before commenting.