who-owns-this-domain

90 / 100 · Low risk

Fine to try. Some of what it can do is expected: a security skill usually runs scanners and checks websites.

By UseOSINT/Skills (GitHub) · security · 63 stars · scanned at commit 06243a5

Establish who registered and who operates a domain using WHOIS, RDAP and DNS. Use when running a whois lookup, querying RDAP, digging A, AAAA, MX, NS, TXT, SOA or CAA records, reading SPF includes, DKIM selectors or DMARC rua addresses, finding the registrar, registrant or nameservers, doing reverse DNS, PTR, ASN or netblock lookups, or hunting historical WHOIS and passive DNS. Applies to phishing and brand-abuse takedown, domain-dispute and UDRP evidence, vendor verification before payment, an…

Works with any agent that supports SKILL.md skills.

What this skill can do

Sends data to these websites: rdap.org

The author does not mention this. Expected for a security skill.

Found in 3 places.

skills/who-owns-this-domain/SKILL.md, line 47curl -s https://rdap.org/domain/example.com | jq .
skills/who-owns-this-domain/SKILL.md, line 48curl -s https://rdap.org/ip/203.0.113.10 | jq '.name, .handle, .country'
skills/who-owns-this-domain/SKILL.md, line 49curl -s https://rdap.org/autnum/64500 | jq '.name, .entities'

Runs commands on your computer

The author does not mention this. Expected for a security skill.

Found in 3 places.

skills/who-owns-this-domain/SKILL.md, line 47curl -s https://rdap.org/domain/example.com | jq .
skills/who-owns-this-domain/SKILL.md, line 95dig +short example.com A; dig +short example.com NS
skills/who-owns-this-domain/SKILL.md, line 119whois -h whois.cymru.com " -v 203.0.113.10" # ASN, prefix, country, AS name

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'who-owns-this-domain' ] || [ -L ~/.agents/skills/'who-owns-this-domain' ]; then echo 'A skill folder named who-owns-this-domain already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/UseOSINT/Skills' "$d" && git -C "$d" checkout --quiet '06243a5620b0c9c97502edd4ee9e31995a3bdccd' -- 'skills/who-owns-this-domain' && mkdir -p ~/.agents/skills && cp -R "$d"/'skills/who-owns-this-domain' ~/.agents/skills/'who-owns-this-domain' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'who-owns-this-domain' ~/.claude/skills/'who-owns-this-domain' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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Score history

Date	Version	Score
2026-11-07	`06243a5`	90