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GET /v1/base

Base conversion (2-36)

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10 free calls per day — no sign-up, no API key. Goes through the oanor gateway.

Custom headers (optional)
api.oanor.com/number-api

It works. Grab an API key and use it in your project.

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Code snippets

curl "https://api.oanor.com/number-api/v1/base" \
  -H "x-oanor-key: oanor_test_..."
await fetch("https://api.oanor.com/number-api/v1/base", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
$ch = curl_init("https://api.oanor.com/number-api/v1/base");
curl_setopt($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/number-api/v1/base",
    headers={"x-oanor-key": "oanor_test_..."}
)

Example response

A real response from this endpoint, captured by the latest health check.

{
    "data": {
        "to": 2,
        "from": 16,
        "input": "ff",
        "value": 255,
        "result": "11111111"
    },
    "meta": {
        "timestamp": "2026-05-30T10:10:55.975Z",
        "request_id": "5c8125db-c4c8-4d18-b0a1-5678bee5cbab"
    },
    "status": "ok",
    "message": "OK",
    "success": true
}