← Area code 669
669-204 phone numbers
Numbers 669-204-0000 to 669-204-9999 are assigned to T-Mobile USA, Inc. (rate centre SNJS WEST, CA, NANPA abbreviation). 2 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.