I should know better than to jump in, but…
I ordered a GTmicro from Lumintop at AX, got a “LP000…” number which did track up until “arrive at destination country”, then fell off the grid. USPS showed that code as (gah, forgot how it was worded) they got notice but are still waiting for the package, not even “label created”.
A few days later, it showed up without notice. Old sticker with the “LP000…” code was on it (still not registering at usps.com), but a new “927…” code was assigned, and the new sticker slapped onto the package as well.
So codes do get changed midstream, once they hit stateside, whatever/whenever.
And in the past, I’ve had tracking numbers with zero information from start to finish, but eventually received them fine, and yes, with that tracking number right on the package.
So yeah, I learned to hope for a legit tracking number, but sometimes they don’t work, and the goodies still arrive.
And even offa Amazon, eg, I ordered something, long gibberish “tracking number” but with notice to contact the seller for more info, so I did. “Please to not worry, package will arrive, trust us!” Wellp, okay, it is Amazon after all, so I did. And yep, it did arrive, right about on “schedule” (“arriving between X and Y” notice).
I’m still amazed that such small crap can be shipped halfway across the planet for so cheap. Keep that in mind.