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GET /v1/subtag

Look up a single subtag

Try it live

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

Custom headers (optional)
api.oanor.com/bcp47-api

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

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Code snippets

curl "https://api.oanor.com/bcp47-api/v1/subtag" \
  -H "x-oanor-key: oanor_test_..."
await fetch("https://api.oanor.com/bcp47-api/v1/subtag", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
$ch = curl_init("https://api.oanor.com/bcp47-api/v1/subtag");
curl_setopt($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/bcp47-api/v1/subtag",
    headers={"x-oanor-key": "oanor_test_..."}
)

Example response

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

{
    "data": {
        "subtag": "de",
        "matches": 2,
        "records": [
            {
                "type": "language",
                "added": "2005-10-16",
                "subtag": "de",
                "descriptions": [
                    "German"
                ],
                "suppress_script": "Latn"
            },
            {
                "type": "region",
                "added": "2005-10-16",
                "subtag": "DE",
                "descriptions": [
                    "Germany"
                ]
            }
        ]
    },
    "meta": {
        "timestamp": "2026-05-31T04:30:15.856Z",
        "request_id": "e49f03e4-7261-4ea2-9838-a70532ffa006"
    },
    "status": "ok",
    "message": "Subtag retrieved",
    "success": true
}