How to check the trumpet if the mobile phone number knows the trombone?

To query the short numbers of other members in the same short number cluster network (the short number can only be queried after 4 days of successful application), please send a free short message "CXDH mobile phone number" to 10086 (for example, CXDH 139XXXX5678).

To view the mobile phone number corresponding to any short number in the group, please send the "short number of the other party in the group" to 10657000 (SMS fee is charged normally).