323-540 phone numbers

Numbers 323-540-0000 to 323-540-9999 are assigned to T-Mobile USA, Inc. (rate centre LSAN DA 03, 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.

Reported numbers in 323-540