DNS Tools

Resolve DNS records (A, AAAA, MX, TXT, CNAME, NS, SOA, SRV, CAA), PTR reverse, and WHOIS.

SKILL.md

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DNS Tools

Low-level DNS lookups and WHOIS. Backed by the dns-tools extension using hickory-resolver (pure Rust, no dig binary).

Use when

  • "What's the A/MX/TXT/NS record for domain.tld?"
  • "Reverse lookup 1.2.3.4"
  • "Who owns this domain?" (WHOIS)
  • Verifying DNS propagation after a Cloudflare change

Do not use when

  • Modifying records — use cloudflare (or the relevant provider skill)
  • Deep port scans or HTTP probing — use endpoint-check / fetch-url

Tools

  • status — resolver info
  • resolve — name + optional type (A default). Supports A/AAAA/CNAME/MX/TXT/NS/SOA/SRV/CAA
  • reverse — ip → PTR names
  • whois — domain; queries whois.iana.org then follows referral to the TLD server

Notes

  • Resolver reads /etc/resolv.conf; falls back to Cloudflare 1.1.1.1 if missing
  • WHOIS body is truncated at 8 KB

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