According to China telephone number rules, 1770890 is a mobile number prefix, belongs to RiKaZeShi(city) in Tibet(province), furthermore, we also provide some other information, such as the postcode example 857000 and the phone number type is Cell Number, the time zone UTC +8. Please pay attention that the detail we provide only as a reference, the details may not be complete and have deviation.

Here are some corresponding phone numbers.