mcp-server-dns
DNS lookups, reverse DNS, WHOIS, and domain checks from your AI assistant. No API keys, no config. Powered by Node.js built-in DNS.
npx mcp-server-dnsWorks with Claude Desktop, Cursor, VS Code Copilot, and any MCP client. Uses Node.js native
dnsmodule, so there's nothing to sign up for.
Demo built with remotion-readme-kit
Why
DNS and WHOIS lookups come up more often than you'd think during development. Debugging email delivery? You need MX records. Setting up a new domain? Check the nameservers. Investigating a suspicious URL? WHOIS tells you who owns it. The existing MCP options for this require paid API keys (like WhoisXML API). This server uses Node.js built-in DNS resolution and public WHOIS servers, so it works out of the box with zero accounts or credentials.
Tools
| Tool | What it does |
|---|---|
dns_lookup |
Look up A, AAAA, MX, TXT, NS, CNAME, SOA, SRV, or PTR |
reverse_dns |
Perform reverse DNS (PTR) lookup on an IP address |
resolve_all |
Resolve A, AAAA, MX, TXT, NS, CNAME in one call |
check_nameservers |
Get nameserver (NS) records for a domain |
whois |
Query WHOIS data (follows IANA referrals to registrar) |
