| Service | Sample Number |
|---|---|
| USPS Tracking® | 9400 1000 0000 0000 0000 00 |
| Priority Mail® | 9205 5000 0000 0000 0000 00 |
| Certified Mail® | 9407 3000 0000 0000 0000 00 |
| Collect On Delivery Hold For Pickup | 9303 3000 0000 0000 0000 00 |
| Global Express Guaranteed® | 82 000 000 00 |
| Priority Mail Express International® | EC 000 000 000 US |
| Priority Mail Express® | 9270 1000 0000 0000 0000 00 EA 000 000 000 US |
| Priority Mail International® | CP 000 000 000 US |
| Registered Mail™ | 9208 8000 0000 0000 0000 00 |
| Signature Confirmation™ | 9202 1000 0000 0000 0000 00 |