MCP Server for nslookup.io

Connect AI tools to real DNS data. Look up records, check certificates, scan for security issues, and monitor uptime — through the Model Context Protocol.

GitHub

Compatible with:Claude DesktopClaude CodeCursorWindsurfContinueZed+ any MCP client

Quick Setup

Claude Desktop — add to claude_desktop_config.json

{"mcpServers": {"nslookup": {
  "command": "npx",
  "args": ["-y", "@nslookup-io/mcp-server"]
}}}

Claude Code

claude mcp add nslookup --scope user -- npx -y @nslookup-io/mcp-server

Cursor — add to .cursor/mcp.json

{"mcpServers": {"nslookup": {
  "command": "npx",
  "args": ["-y", "@nslookup-io/mcp-server"]
}}}

Windsurf — add to ~/.codeium/windsurf/mcp_config.json

{"mcpServers": {"nslookup": {
  "command": "npx",
  "args": ["-y", "@nslookup-io/mcp-server"]
}}}

Other MCP clients — run via npx

npx -y @nslookup-io/mcp-server

8 Tools

dns_lookup

Look up A, AAAA, NS, MX, TXT, CNAME, SOA records

dns_record

Query any of 53 DNS record types

dns_propagation

Check propagation across 18+ global servers

webservers

Get IPv4 and IPv6 addresses for a domain

ssl_certificate

Check SSL/TLS certificate, chain, cipher, expiry

bimi_vmc

Verify BIMI records and VMC certificates

security_scan

Scan for SPF, DKIM, DMARC, and web security issues

uptime_check

Check if a URL is up with response time

Use Cases

DevOps

Verify DNS records after deployments, check propagation status, validate SSL certificates before go-live.

Security

Audit SPF, DKIM, DMARC configurations. Scan domains for vulnerabilities. Check BIMI/VMC compliance.

SRE

Quick uptime checks during incidents. Verify DNS resolution across global servers. Monitor certificate expiry.

Development

Look up DNS records while coding. Debug email delivery issues. Verify domain configurations from your IDE.

Example Prompts

Once installed, try asking:

"What are the DNS records for github.com?"

"Check the SSL certificate for stripe.com"

"Run a security scan on example.com"

"Is https://cloudflare.com up?"

"Check DNS propagation for my-domain.com A record"

"Does google.com have a BIMI record?"

"Show me the MX records for amazon.com"

"What are the DNSKEY records for cloudflare.com?"

"Check the SPF record for microsoft.com"

Changelog

v1.1.0

SSL, BIMI/VMC, Security Scan, Uptime Check

4 new tools for certificate checking, BIMI/VMC verification, security scanning, and uptime monitoring.

v1.0.0

Initial Release

DNS lookup, specific record type query (53 types), propagation check (18+ servers), IP address lookup.

53 Supported DNS Record Types

A AAAA AFSDB APL AXFR CAA CDNSKEY CDS CERT CNAME CSYNC DHCID DLV DNAME DNSKEY DS EUI48 EUI64 HINFO HIP HTTPS IPSECKEY IXFR KEY KX LOC MX NAPTR NS NSEC NSEC3 NSEC3PARAM NXT OPENPGPKEY OPT PTR RP RRSIG SIG SMIMEA SOA SPF SRV SSHFP SVCB TA TKEY TLSA TSIG TXT URI ZONEMD