Developers · Tools

Tools for postal and parcel data

These tools run in your browser. The data that you type stays on this page.

UPU S10 tracking number

Check the format and the check digit, and see the entry type 13 bill.

Tracking number

Valid S10 number

Service: CP · Parcel post
Serial number: 12345678
Check digit: 5 (correct)
Issuing post: CA
Entry type 13 bill, air: issuer blank · SFPCP123456785CA
Entry type 13 bill, truck, rail or ocean: issuer SFP · CP123456785CA

Entry type 13 route checker

Find the U.S. entry for one parcel.

Channel

Value (USD)

FDA or other agency goods

Chapter 99 duties

AD/CVD or quota goods

Entry type 13

Why: Mail of $2,500 or less. The monthly postal informal entry is another route for these goods.
Manifest filed by: The carrier that moves the mail (air or truck manifest)
Bill on the entry: Type R. Air: SFP + S10. Truck: issuer SFP, then the S10
Addressee number: Not needed: name and address

A guide, not a ruling. The data test confirms the route for your goods.

JSON pre-flight check

Paste a postal-items.v1 batch. The check gives the same codes as the API.

Batch (postal-items.v1)

{
  "batch_ref": "POST-DISPATCH-2026-10-01-A",
  "sent_at": "2026-10-01T09:30:00Z",
  "dispatch": {
    "dispatch_id": "DISPATCH-0001",
    "mode": "AIR",
    "carrier": "EXAMPLE AIRLINE",
    "flight_or_trip": "XX123",
    "us_port_code": "4701",
    "expected_arrival_date": "2026-10-02"
  },
  "items": [
    {
      "item_id": "CP123456785CA",
      "nature_code": 11,
      "sender": {
        "name": "EXAMPLE SHOP LTD",
        "address": {
          "line1": "100 EXAMPLE ST",
          "city": "TORONTO",
          "region": "ON",
          "postal_code": "M5V1A1",
          "country": "CA"
        }
      },
      "addressee": {
        "name": "JANE SAMPLE",
        "address": {
          "line1": "100 MAIN ST",
          "city": "NEWARK",
          "state": "NJ",
          "zip5": "07102"
        }
      },
      "contents": [
        {
          "description": "WOMEN'S KNITTED COTTON SWEATER",
          "quantity": 1,
          "net_weight_kg": 0.4,
          "value": "45.00",
          "hs_code": "611020",
          "origin_country": "CA"
        }
      ],
      "currency": "CAD",
      "gross_weight_kg": 0.5,
      "postage_paid": "18.50"
    }
  ]
}

1 accepted, 0 rejected, 0 duplicate
ACCEPTED CP123456785CA

This check tests the $2,500 limit only for values in USD. We convert other currencies at the CBP exchange rate when we file.