ipv4.fr Network Tools

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

• Connection: Runs in the cloud
• Transport: Streamable HTTP
• Category: Chat & email
• You need to fill in: X-Api-Key

Install

Pick the AI app you use, then copy the settings.

You need

• Runs in the cloudNothing to install; it connects over the internet

Which app do you use?

claude mcp add --transport http network-tools https://ipv4.fr/mcp --header 'X-Api-Key: your-value'

{
  "mcpServers": {
    "network-tools": {
      "url": "https://ipv4.fr/mcp",
      "headers": {
        "X-Api-Key": "your-value"
      }
    }
  }
}

{
  "servers": {
    "network-tools": {
      "type": "http",
      "url": "https://ipv4.fr/mcp",
      "headers": {
        "X-Api-Key": "your-value"
      }
    }
  }
}

Your choice stays on this device in a cookie; no account needed.

Values you fill in

• X-Api-Key secret HTTP header
  Optional ipv4.fr API key for higher limits (https://ipv4.fr/pricing). Without it: 20 free calls per day.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Tool names and descriptions exactly as the server reported them on Nov 7, 2026. The maker wrote them, not us; we show them as plain text.

• 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, pay

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 10, 2026

• ! Caution

  Maker matches the repo

  The registry lists no source repo, so we cannot match the publisher (ipv4.fr) to the code

• … Not checked yet

  Still maintained

  We have not read this repo from GitHub yet

• … Not checked yet

  Has a licence

  We have not read this repo from GitHub yet

• ✓ Pass

  Endpoint responds

  Responded in 673 ms (HTTP 200)

• – Not applicable

  Sign-in with OAuth

  No sign-in needed

• ✓ Pass

  No hidden instructions in tool descriptions

  Read 9 tool descriptions and found no hidden instructions to the AI

Compared with others in Chat & emaili

• More stars than 0% of the other 1903 servers in this category
• Published to the registry more recently than 65% of the other 1903 servers in this category
• Basic checks equal to or better than 47% of the other 1903 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:↓ Downloads per weeki★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

README from the maker

No README found in the repo