Return the full IPv4 subnet breakdown for an address: network and broadcast address, subnet mask, wildcard mask, binary mask, first and last usable host, total and usable host counts, IP class (A-E), and IP type (public, private, loopback, link-local, multicast, reserved). Accepts CIDR notation (192.168.1.0/24), a bare IP (defaults to /24), or an IP plus a dotted subnet mask.
This page documents the HTTP endpoint POST /api/tools/subnet-calculator/execute. See the MCP reference →
Call it over REST
POST https://api.findutils.com/api/tools/subnet-calculator/execute · no API keys · 60 requests/min per IP
Execute — verified arguments
curl -X POST https://api.findutils.com/api/tools/subnet-calculator/execute \
-H "Content-Type: application/json" \
-d '{
"ip": "192.168.1.0/24"
}'Parameter schema for this endpoint
curl https://api.findutils.com/api/tools/subnet-calculatorInput schema
| Argument | Type | Required | Description |
|---|---|---|---|
| ip | string | yes | IPv4 address, with or without a /prefix, e.g. "192.168.1.0/24" or "10.0.0.5". Without a prefix /24 is assumed unless mask is given. |
| mask | string | no | Optional dotted subnet mask such as "255.255.255.0". When given it overrides the prefix in ip. |
Example arguments (verified)
{
"ip": "192.168.1.0/24"
}Also an MCP tool
Claude, Cursor, and any MCP client can call this tool as
findutils:subnet_calculator after one connect command.
Connect once
claude mcp add findutils --transport http https://mcp.findutils.com/More Network tools
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