Is an IP inside a CIDR

Code-Snippets

curl "https://api.oanor.com/subnet-api/v1/contains" \
  -H "x-oanor-key: oanor_test_..."

await fetch("https://api.oanor.com/subnet-api/v1/contains", {
  headers: { "x-oanor-key": "oanor_test_..." }
});

$ch = curl_init("https://api.oanor.com/subnet-api/v1/contains");
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$out = curl_exec($ch);

import requests
requests.get(
    "https://api.oanor.com/subnet-api/v1/contains",
    headers={"x-oanor-key": "oanor_test_..."}
)

Beispiel-Response

Echte Antwort dieses Endpoints, erfasst beim letzten Health-Check.

{
    "data": {
        "ip": "10.1.2.3",
        "cidr": "10.0.0.0/8",
        "contains": true
    },
    "meta": {
        "timestamp": "2026-05-30T10:10:56.481Z",
        "request_id": "1e36be8f-58ce-4878-9526-99fcbaa4c1db"
    },
    "status": "ok",
    "message": "OK",
    "success": true
}