17TRACK currently has not connected with Aliexpress (Cainiao) system yet. Hence, our system cannot recognize their shipping numbers.
17TRACK can only track original tracking numbers from the actual carrier. The reference numbers from any platforms/marketplaces cannot be regarded as tracking numbers because the local delivery carriers could not recognize those numbers either when the parcels arrive in the destination countries.
The Aliexpress merchants (sellers) ought to know the shipping method and the real carrier who's carrying your orders, and get the original tracking numbers from them, then you can track them directly on 17TRACK. The real tracking number is also very crucial for your consumers to make inquiries when the orders arrive in their countries.
For your information, as most of Cainiao's partners have integrated with us, they can be actually found in 17TRACK's system; for instance, number LP0000000008, please select the carrier as Yanwen, we will get the tracking information from Yanwen and display the exact same information as on cainiao. The most common carriers on Cainiao are: Sunyou, yanwen, 4px, direct link, post11, Asendia, Aramex and more. Some economic flat-rate mails aren't trackable.
For further guidance, feel free to contact us and we'd love to guide you on how to track Cainiao shipments.