AliExpress shipping information is powered by “Cainiao”, which is a quite different tracking system compared to 17TRACK. Cainiao creates their own shipping numbers, but only the official carrier's original tracking numbers can be tracked via 17TRACK.
Besides, Cainiao is usually for small and low valued packets; partial of them are economic surface mails without full tracking capability.
More importantly, your destination carrier couldn't identify cainiao's reference numbers either. Only if you get an original tracking number it could be tracked by our system and your local carrier then.