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DNS, reverse DNS, WHOIS, and domain availability lookups with zero config or auth using Node.js built-in DNS.
Quick Install
Automated & IDE SetupCopy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.
Not yet automatically verified
We haven't yet run this listing's install command through our automated sandbox check. This isn't a red flag — we're steadily working through the catalog.
Manual Client & Custom JSON ConfigExpand JSON ▾
Client Config & Setup
Choose your client or environment
Target File:
💡 Paste the JSON block into your client's configuration file under mcpServers, then restart the application.
Overview
Use cases
Look up DNS records (A, AAAA, MX, TXT, NS, CNAME, SOA, SRV, PTR)
Perform reverse DNS lookup on IP addresses
Query WHOIS data for domain ownership and registrar info
Check nameservers for a given domain
Resolve multiple DNS record types in a single call
Key features
Supports multiple DNS record types including A, AAAA, MX, TXT, NS, CNAME, SOA, SRV, PTR
Performs reverse DNS (PTR) lookups
WHOIS queries follow IANA referrals to registrars
No API keys or authentication required
Zero configuration setup
Powered by Node.js built-in DNS module
Capabilities & Tool Schemas (5)
Inspect callable tools, capabilities, and parameters exposed to AI agents by MCP Server Dns.
dns_lookupLook up A, AAAA, MX, TXT, NS, CNAME, SOA, SRV, or PTR
reverse_dnsPerform reverse DNS (PTR) lookup on an IP address
resolve_allResolve A, AAAA, MX, TXT, NS, CNAME in one call
check_nameserversGet nameserver (NS) records for a domain
whoisQuery WHOIS data (follows IANA referrals to registrar)
Documentation Overview
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.
Works 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) |
Quick Start
Cursor
Add to .cursor/mcp.json:
Claude Desktop
Add to claude_desktop_config.json:
VS Code
Add to user settings or .vscode/mcp.json:
Examples
- "What are the DNS records for example.com?"
- "Do a reverse DNS lookup on 8.8.8.8"
- "Show me the WHOIS info for github.com"
- "What nameservers does cloudflare.com use?"
- "Resolve all record types for google.com"
- "Check the MX records for my-company.com"
Development
See also
More MCP servers and developer tools on my portfolio.
Author
README built with README Builder
License
MIT © 2026 Ofer Shapira
Related MCP Servers
Adoption & maintenance
Factual signals from GitHub, npm, and our automated checks — not a rating.
GitHub stars
3
Stargazers on the source repository.
npm downloads
220
Package downloads in the last 30 days.
Last commit
6mo ago
Most recent push to the default branch.
Tools exposed
5
Callable tools this server registers over MCP.
Directory activity
2 views
Config copies, upvotes, and views on AllMCPs.
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Frequently Asked Questions about MCP Server Dns
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CategorySecurity
PricingFree
9/10 checks healthy over the last 32d
53Quality signal: Good · 53/100How this signal is calculated ▾
Server availabilityNot measured
Not scored for repo-hosted servers — we can't reach the running server, only its GitHub page. Hosted MCP endpoints are health-checked live.
Verified ownership10/20
Documentation & tools26/30
Adoption & activity4/15
Community engagement0/10
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Scanned 23d ago via OSV.dev · mcp-server-dns (npm)
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