Canadial Know Who Called
← Area code 925

925-300 phone numbers

Numbers 925-300-0000 to 925-300-9999 are assigned to T-Mobile USA, Inc. (rate centre WALNUT CRK, CA, NANPA abbreviation). 6 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.

Reported numbers in 925-300