Dns

Plugs Node.js native DNS resolution and public WHOIS servers into Claude with no API keys or signup required. You get five tools: dns_lookup for A, AAAA, MX, TXT, NS, CNAME, SOA, SRV, and PTR records, reverse_dns for IP to hostname lookups, resolve_all to fetch multiple record types in one shot, check_nameservers for NS queries, and whois with IANA referral following. Useful when you're debugging email delivery and need MX records, verifying nameserver propagation, or investigating domain ownership without leaving your editor. Runs via npx in Cursor, Claude Desktop, or VS Code with stdio transport.