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Check DNS, email authentication, blocklists and TLS for any domain, with the fix for each finding.

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Tools
8

exposed by this connector

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#2981of 3,757174places up24h—7d
#2,964#3,017#3,070#3,123Sep 3Sep 9Sep 15Sep 21Sep 27Oct 2

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3,907+1,32224h—7d
2,4532,8503,2473,644Sep 3Sep 9Sep 15Sep 21Sep 27Oct 2

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Developer tools521st of 662 by popularity · not ranked by trending score
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Sales and marketing760th of 955 by popularity · not ranked by trending score
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Ask about a domain in plain words and Claude runs the checks against live DNS: records and propagation across five public resolvers, DNSSEC, SPF/DKIM/DMARC, mail blocklists, WHOIS/RDAP, TLS certificates and HTTP security headers. Every finding comes with a level, a plain explanation and, where there is one, the fix, so you get what to change rather than raw output.

All tools are read-only and need no account or key. Private and local addresses are refused. The audit prompt runs every check on a domain and lists what to fix, worst first.

Tools

  • blacklist_check
  • dns_propagation
  • dns_records
  • dnssec
  • email_health
  • http_headers
  • ssl_certificate
  • whois
Categories
Made by
Ignacio Sánchez · Website
Sign-in
Not required
Connector URL
https://internet-tools.net/mcp
Transport
Streamable HTTP
Works with
Claude, Claude API, Claude Code, Claude Desktop
Added
September 26, 2026
More info