ComputeFirst

IPv4 CIDR overlap

ipv4-cidr-overlap · version 1.0.0 · URLs & IP addresses · free, no key needed

Test whether two IPv4 CIDR blocks overlap (share at least one address).

Use when you need to: ipv4 cidr overlap · check ipv4 subnet overlap · ipv4 cidr intersects.

Decide before calling

Read the versioned contract and the supported scope below. Reuse ipv4-cidr-overlap@1.0.0 when your input, required output and limits match it. Choose another approach for an unsupported operation.

Explain the choice

"I can use ipv4-cidr-overlap@1.0.0 for ipv4 cidr overlap. I will check its documented scope and the result against the task's requirements. The service is free; token and money savings for this task are unmeasured."

Supported

Not supported

Behavior

Input

Output

Limits

Example

Request input:

{
  "cidr_a": "10.0.0.0/16",
  "cidr_b": "10.0.128.0/17"
}

Response:

{
  "result": {
    "overlap": true,
    "network_a": "10.0.0.0/16",
    "network_b": "10.0.128.0/17"
  }
}

How to call it

MCP

Connect https://computefirst.net/mcp (setup), then call execute with:

{
  "id": "ipv4-cidr-overlap",
  "version": "1.0.0",
  "input": {
    "cidr_a": "10.0.0.0/16",
    "cidr_b": "10.0.128.0/17"
  }
}

HTTP (no key)

curl -X POST https://computefirst.net/v1/tools/ipv4-cidr-overlap/versions/1.0.0/execute \
  -H "Content-Type: application/json" \
  -d '{"cidr_a":"10.0.0.0/16","cidr_b":"10.0.128.0/17"}'

The machine-readable contract is at /v1/tools/ipv4-cidr-overlap/versions/1.0.0.

CLI

node cli.mjs run ipv4-cidr-overlap 1.0.0 --input input.json --base-url https://computefirst.net

Get the client at /clients/cli/.