10655929, what's the date? Unicom?

10655929 is the number of China Unicom's mobile phone business hall.

The number at the beginning of 106 is the SMS service number of domestic SP company, in which the numbers at the beginning of 10657 and 10658 belong to the self-operated service number of China Mobile, the number at the beginning of 10655 belongs to the self-operated service number of China Unicom, and the number at the beginning of 10659 belongs to the self-operated service number of China Telecom.