dns-lookup

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Translated

DNS lookups, reverse DNS, WHOIS, and domain checks via MCP. Use when asked to check DNS records or domain ownership.

1installs

Added on2026-03-06

NPX Install

npx skill4agent add ofershap/mcp-server-dns dns-lookup

Use this skill when you need to look up DNS records, perform reverse DNS, check WHOIS data, or verify nameservers. Zero auth required.

Tool	What it does
`dns_lookup`	Look up A, AAAA, MX, TXT, NS, CNAME, SOA, SRV, or PTR records
`reverse_dns`	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)

For general domain investigation: start with
```
resolve_all
```
to see everything at once
For specific record types: use
```
dns_lookup
```
with the
```
type
```
parameter
For IP investigation: use
```
reverse_dns
```
to find the hostname
For domain ownership: use
```
whois
```

```
dns_lookup
```
with
```
type: "MX"
```
is the go-to for email delivery debugging
```
resolve_all
```
returns all common record types in one call — most efficient for initial investigation
```
whois
```
follows IANA referrals automatically, so it works for any TLD
No API keys or auth needed — uses Node.js built-in DNS and public WHOIS servers