usps tracking number.com is not an official USPS website, but users often mistakenly search for tracking with that term. The actual USPS tracking can be accessed through usps.com. A USPS tracking number is a unique 22-digit code that allows customers to monitor the status of mail or packages. It provides information like location, estimated delivery date, and delivery confirmation. Tracking is included with most USPS services, including Priority Mail and Ground Advantage. Entering the number at the official USPS site or mobile app ensures real-time updates. Misleading third-party tracking websites may not provide accurate or secure information.