whois
WHOIS/RDAP query API for domains, IP addresses, CIDR prefixes and ASNs, with unified JSON output, caching, API key authentication, batch queries and MCP support for AI assistants.
- Network Utilities & DNS
- Go
- MIT
- Docker
- Actively maintained
GitHub stats
- GitHub stars
- 64
- Forks
- 15
- Open issues
- 0
- Commits, last 12 months
- 307
- Last commit
- Oct 1, 2026
- Latest release
- v1.4.0Sep 26, 2026
- Created
- Sep 20, 2023
Data from the GitHub API, refreshed daily.
About whois
WHOIS/RDAP query API for domains, IP addresses, CIDR prefixes and ASNs, with unified JSON output, caching, API key authentication, batch queries and MCP support for AI assistants. whois is open source under the MIT license and written mainly in Go, so you can read the code, run it on your own hardware and keep full control of your data.
The project has 64 stars and 15 forks on GitHub, with 307 commits over the last year. It ships a Docker image, which makes it a good fit for a small VPS or a home server running Docker Compose.
Topics
- api
- domain
- golang
- ip
- whois
- whois-lookup
- asn
- docker
- ipv6
- mcp
Repository preview
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What is whois?
whois is a free, open-source app you can host on your own server, listed in our Network Utilities & DNS category. WHOIS/RDAP query API for domains, IP addresses, CIDR prefixes and ASNs, with unified JSON output, caching, API key authentication, batch queries and MCP support for AI assistants. The source code lives at github.com/KincaidYang/whois, where it has 64 stars.
Is whois free and open source?
Yes. whois is open-source software released under the MIT license, so you can self-host it at no cost. You only pay for the server it runs on, and some projects also offer an optional paid cloud plan.
Can I run whois with Docker?
Yes. whois provides a Docker image, so you can run it on any Linux server with Docker and Docker Compose installed. The project README lists the image name and the environment variables to set.
What are the best alternatives to whois?
Popular open-source alternatives to whois include Pi-hole, AdGuard Home and MyIP.
Is whois actively maintained?
The most recent commit to whois was on Oct 1, 2026 with 307 commits in the past twelve months. The latest release is v1.4.0, published Sep 26, 2026. Check the open issues on GitHub to gauge how quickly maintainers respond.