whois

Name: whois Review
Item: whois
Rating: 3.0
Author: Aaron Matthews

Skill Development Usable

Works inClaude Code

Usable Scanned — metadata only

Eliminates external WHOIS API dependencies and latency, enabling real-time domain/IP ownership verification without third-party rate limits or privacy concerns.

Self-hosted WHOIS/RDAP API and MCP server for domains, IPv4/IPv6, CIDRs and ASNs.

Ask Claude to look up domain ownership and registrar details for any website address.
Generate a report of IP address geolocation and ASN information for network troubleshooting.
Find CIDR block details and associated organization data for security audits and network planning.

63 starsMIT (commercial OK)FreeQuick setup

Usable rating — This tool is functional but has notable gaps. Review the evaluation notes below before deploying.

Why it matters

Eliminates external WHOIS API dependencies and latency, enabling real-time domain/IP ownership verification without third-party rate limits or privacy concerns.

Best for

Infrastructure teams and security engineers managing DNS, IP allocation audits, and threat intelligence workflows requiring offline WHOIS resolution.

Works in

Claude Code Claude Cowork Claude Chat

Source

https://github.com/KincaidYang/whois

By KincaidYang

How to Get It

Option 1: Claude Desktop App (Code Mode)Click the + button next to the prompt box → Plugins → Add plugin. Search and click Install. Skills work in Claude Code only.

Option 2: Paste into Claude CodeCopy the command below and paste it into your conversation. Claude will install it.

Command

claude plugins install KincaidYang/whois

Tip: Paste this into a Claude Code conversation. Verify command matches your Claude Code version.

Auto-generated from the tool's public listing — not hands-on verified. Cross-check against the source repo's README before running.

First thing to try

After installing, paste this into Claude:

Look up domain ownership and registrar details for any website address

CostFree

Trust Signals Auto-scanned

Stars63Last updated2026-07-29LicenseMIT (OK for commercial use)Known CVEsNone foundSources: GitHub Advisory Database + OSV.dev · Scanned 2026-07-29 · scanner v1

Community Pulse New

No community discussions found yet. This doesn't mean the tool isn't good — it may be new or serve a niche use case.

Reviewer notes

Auto-scanned review. These are observations, not a security certification.

Scored from trust signals (evidence-eval-v1): 63 GitHub stars; contributors unknown; last commit 0d ago; license MIT.

Things to check

Scanned, not hands-on tested — this entry was auto-scanned from public metadata (GitHub metrics, license, security flags). No reviewer has run it, and no tool-specific limitations have been documented yet.

How to evaluate tools before deploying →

Data shown here comes from public APIs and automated scanning. Reviewer notes reflect one person's experience. This is not a security certification or legal recommendation. Always evaluate tools according to your own organization's policies.

Evaluation Scores

Evaluation

Ease of Use

3/5

Versatility

3/5

Reliability

3/5

Security

3/5

Overall score3.00 / 5.00 UsableEvaluatedJul 2026

Scored from trust signals (evidence-eval-v1): 63 GitHub stars; contributors unknown; last commit 0d ago; license MIT.

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