1. Check the courier company official website: On the courier company official website, there are some functions to query the courier number. You can enter the courier number to view the sender information, mailing address and other details.
2. Call the customer service of the courier company: You can ask the customer service staff about the details of the courier, including the sender information.
3. Check the waybill information: the waybill usually contains the sender's name, address and other information.