What does a Surpost tracking number look like?

Surpost tracking numbers follow this format: S10 format ending in SR. Example: RR346651200SR.

How do I get a Surpost tracking URL from a tracking number?

Send the tracking number to ShipShim's API (POST /api/v1/track) and it returns the direct Surpost tracking link, the detected carrier, and a confidence score. For the example number RR346651200SR the tracking URL is https://surpost.com/.

What if my number matches more than one carrier?

ShipShim returns a ranked list of every matching carrier with confidence scores, and you can lock the result by passing the carrier name or a country hint.

Surpost tracking URL from a tracking number

Surpost (SR) tracking numbers follow this format: S10 format ending in SR. ShipShim detects the carrier from the number and returns the direct tracking link.

Example: number in, tracking URL out

Example tracking number	`RR346651200SR`
Tracking URL	https://surpost.com/

This format is distinctive, so ShipShim identifies Surpost from the bare number — no hints needed.

Get the Surpost tracking link via API

curl -X POST https://shipshim.com/api/v1/track \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"tracking_number": "RR346651200SR"}'

Response:

{
    "tracking_number": "RR346651200SR",
    "carrier": "Surpost",
    "country": "SR",
    "tracking_url": "https://surpost.com/",
    "confidence": 100,
    "matches": [
        {
            "carrier": "Surpost",
            "country": "SR",
            "confidence": 100,
            "tracking_url": "https://surpost.com/"
        }
    ]
}

Get a free API key Read the API reference — the free tier includes 100 calls/month.

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