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 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. Track your shipments anytime with 17TRACK using the website, mobile app, WeChat Mini Program, or Shopify app. Enjoy the same accurate tracking results as the carrier's official site, with real-time updates at every step. © 1996-2026 Amazon.com, Inc. or its affiliates. All rights reserved. USPS.com® - USPS Tracking® Welcome to USPS.com. Track packages, pay and print postage with Click-N-Ship, schedule free package pickups, look up ZIP Codes, calculate postage prices, and find everything you need for sending mail and shipping packages. Track your USPS packages by entering the tracking number to check the delivery status and location. Track packages worldwide with any tracking number. Get real-time delivery updates from 3,300+ carriers. Free tracking, no login required. Tracking number or tracking code is a unique number assigned to each package, which allows you to monitor the movement of the parcel between the countries or even inside one country. Tracking numbers can be international or traceable only within the country of the sender. Track one or multiple packages with UPS Tracking, use your tracking number to track the status of your package. Enter your FedEx tracking number, track by reference, obtain proof of delivery, or TCN. See FedEx Express, Ground, Freight, and Custom Critical tracking services.