dns-whois-mcp
FastMCP server for DNS lookups and WHOIS domain research, enabling comprehensive domain investigation with parallel DNS records, WHOIS, and reverse lookups.
README
dns-whois-mcp
FastMCP server for DNS lookups and WHOIS domain research. Part of the Palimpsest intelligence toolkit.
Tools
- dns_lookup — DNS record lookup (A, AAAA, MX, NS, TXT, SOA, CNAME, PTR, SRV, CAA, DS, DNSKEY). Returns JSON with resolved records.
- whois_lookup — WHOIS domain or IP query. Returns structured data
(registrar, creation/expiry dates, name servers, registrant, DNSSEC)
plus raw WHOIS text. Includes computed
age_days. - reverse_lookup — Reverse DNS (PTR) lookup for an IPv4 or IPv6 address.
- dns_research — Comprehensive domain investigation. Runs all DNS record types and WHOIS in parallel, then reverse-lookups every resolved IP. Consolidated JSON report.
Usage
Via stdio (MCP)
python -m dns_whois_mcp
Example
dns_research("magnalending.co.uk")
As a library
from dns_whois_mcp.server import _dns_lookup_sync, _whois_lookup_sync
print(_dns_lookup_sync("iana.org", "A"))
print(_whois_lookup_sync("iana.org"))
Storage
Every lookup is archived as a JSONL entry in
~/.local/share/dns-whois/YYYY-MM-DD-dns-whois.jsonl.
Duplicates (same domain + same tool within the same hour) are skipped.
Each entry includes a human-readable content field for full-text search
via fst-indexer and
unified-history-mcp.
Dependencies
- Python ≥ 3.11
- mcp ≥ 1.0
- dnspython ≥ 2.7
- asyncwhois ≥ 1.0
Install
pip install -e .
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