How does package tracking work?

Carriers assign each parcel a unique tracking number that follows a predictable format (length, prefix, check digits). Parcel Tracker Monkey matches that format against known carrier patterns, then links you to the official carrier tracking page where the live status is shown.

Why is my tracking number not updating?

New labels can take a few hours to appear after they are scanned for the first time. International parcels can also go quiet while they move between carriers or clear customs. If a number is still blank after 24–48 hours, double-check it with the sender.

Can I track international parcels?

Yes. Parcel Tracker Monkey supports international formats for USPS, UPS, FedEx, DHL, Canada Post, Royal Mail, Australia Post, and China Post, and falls back to a web search for less common carriers.

Which carriers are supported?

USPS, UPS, FedEx, DHL, Canada Post, Royal Mail, Australia Post, and China Post are detected automatically. You can also pick 'Other' to search for the carrier.

Does Parcel Tracker Monkey store tracking numbers?

No. Recent numbers are kept in your browser's session storage so they survive a page refresh, but they are cleared when you close the tab and never sent to any server.

Is the tracking number case-sensitive?

Numeric portions aren't. Letter prefixes like 1Z or country suffixes like US/GB are usually treated as uppercase.

Understanding Tracking Numbers

The format is the clue

Most carriers use a predictable structure. UPS numbers start with 1Z and are 18 characters. USPS numbers are commonly 20–22 digits. DHL Express is 10 digits. International numbers often end in a 2-letter country code like US, GB, or CN.

Check digits

The final digit of many tracking numbers is a checksum derived from the rest. It lets carriers reject typos before they hit the network — a feature Parcel Tracker Monkey leverages for auto-detection.

How auto-detection works

Parcel Tracker Monkey matches your input against carrier-specific regex patterns. If multiple carriers could match, you'll see all candidates and can pick the right one manually.

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