tracking is tricky. Checking it with Tor is a good way to get a package flagged, checking it without Tor is a good way to get your IP address associated with an illegal package. One option is to try one of the third party tracking proxies and hope they do not forward on your Tor IP address, another option is to use open WiFi from random location although even that can be fingerprinted and seen as suspicious and flag worthy. It is a tricky question too because checking tracking can save the day if you have a box registered to a fake ID. I have seen them say right on tracking that a package has been seized , if going to a fake ID box that means you just drop the box and get a new one.