Works for the following brokers / truckers:

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1. ECHO - Starts with 4

2. Shipco - Starts with 1

3. Archgate - Starts with 1 (same website as Shipco)

4. Priority1 - Starts with 5 or 6.

5. Forward Air - Starts with 7

6. UPS - Starts with Z

7. Land Air Express - Add an "E" before the tracking number.

8. Tax Air - Starts with 9