ipv4.fr Network Tools

Reliability

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How to connect

Add it to any MCP client that supports remote servers.

{
  "mcpServers": {
    "ipv4-fr-network-tools": {
      "type": "http",
      "url": "https://ipv4.fr/mcp"
    }
  }
}

9 tools

• dns_lookup

  DNS records for a domain (A, AAAA, MX, TXT, NS by default; also CNAME, SOA).

• whois

  WHOIS registration data for a domain: registrar, creation and expiry dates, name servers.

• ssl_check

  TLS certificate of a host: validity, issuer, expiry, days remaining, SAN.

• ip_geolocation

  Geolocation of an IP address: country, city, ISP, coordinates, timezone.

• email_validate

  Validate an email address: syntax, MX records, SMTP check, disposable and role-based detection.

• ip_blacklist

  Check an IPv4 address against 3 DNS blacklists (Barracuda, SpamCop, UCEPROTECT).

• http_headers

  HTTP response headers and status of a public URL (HEAD request, redirects followed and checked).

• subnet_calc

  IPv4 subnet calculator from CIDR: network, broadcast, netmask, wildcard, host range, host count.

• domain_audit

  AI security audit of a domain: DNS, SPF, DMARC, TLS, HTTP security headers, WHOIS expiry and IP blacklists, returned as a 0-100 score, findings by severity and exact fixes. Requires a paid ipv4.fr API key (X-Api-Key header); uses 10 requests of the daily limit. Without a key…

Security scan

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