ipv4.fr Network Tools

fr.ipv4/network-toolsVersion 1.0.0

DNS, WHOIS, SSL, IP geolocation, email validation, DNSBL blacklist, HTTP headers, subnet calc.

Status

Responds1061 msNov 14, 2026, 14:31 UTCAnswered our handshake without sign-in.

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Last checked: Nov 14, 2026, 14:31 UTC
Latency: 1061 ms
Remotes responding: 1 of 1
Sign-in: No sign-in
Hosting: Hosted outside the EU (detected)
Registry data as of: Nov 14, 2026, 22:14 UTC

Data from the official MCP Registry, checked by run.zero. How we check

Connect

Streamable HTTP

https://ipv4.fr/mcpResponds1061 msNov 14, 2026, 14:31 UTC

No sign-in

Claude Code

claude mcp add --transport http network-tools https://ipv4.fr/mcp

Claude Desktop and claude.ai

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Settings > Connectors > Add custom connector
Name: network-tools
Remote MCP server URL: https://ipv4.fr/mcp

Cursor

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

VS Code

code --add-mcp '{"name":"network-tools","type":"http","url":"https://ipv4.fr/mcp"}'

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Tools

9 tools

Tools of ipv4.fr Network Tools
	Description		Read-only	Idempotent	Open world
`dns_lookup`DNS records for a domain (A, AAAA, MX, TXT, NS by default; also CNAME, SOA).	DNS records for a domain (A, AAAA, MX, TXT, NS by default; also CNAME, SOA).	Not declared	Yes	Not declared	Yes
`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, pay per call with x402 (0.05 USDC on Base).	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, pay per call with x402 (0.05 USDC on Base).	Not declared	Yes	Not declared	Yes
`email_validate`Validate an email address: syntax, MX records, SMTP check, disposable and role-based detection.	Validate an email address: syntax, MX records, SMTP check, disposable and role-based detection.	Not declared	Yes	Not declared	Yes
`http_headers`HTTP response headers and status of a public URL (HEAD request, redirects followed and checked).	HTTP response headers and status of a public URL (HEAD request, redirects followed and checked).	Not declared	Yes	Not declared	Yes
`ip_blacklist`Check an IPv4 address against 3 DNS blacklists (Barracuda, SpamCop, UCEPROTECT).	Check an IPv4 address against 3 DNS blacklists (Barracuda, SpamCop, UCEPROTECT).	Not declared	Yes	Not declared	Yes
`ip_geolocation`Geolocation of an IP address: country, city, ISP, coordinates, timezone.	Geolocation of an IP address: country, city, ISP, coordinates, timezone.	Not declared	Yes	Not declared	Yes
`ssl_check`TLS certificate of a host: validity, issuer, expiry, days remaining, SAN.	TLS certificate of a host: validity, issuer, expiry, days remaining, SAN.	Not declared	Yes	Not declared	Yes
`subnet_calc`IPv4 subnet calculator from CIDR: network, broadcast, netmask, wildcard, host range, host count.	IPv4 subnet calculator from CIDR: network, broadcast, netmask, wildcard, host range, host count.	Not declared	Yes	Not declared	Yes
`whois`WHOIS registration data for a domain: registrar, creation and expiry dates, name servers.	WHOIS registration data for a domain: registrar, creation and expiry dates, name servers.	Not declared	Yes	Not declared	Yes

Details

Registry status: Active
Published: Oct 24, 2026
Updated: Oct 24, 2026
Website: https://ipv4.fr/⁠ (opens in a new tab)
Repository: Not given
Categories (suggested): Cloud and infrastructure CommunicationSuggested categories are assigned automatically from the registry text and may be wrong. Verified operators can correct them.
GDPR: Not declared

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