424-390 phone numbers

Numbers 424-390-0000 to 424-390-9999 are assigned to T-Mobile USA, Inc. (rate centre REDONDO, CA, NANPA abbreviation). 8 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 424-390-8xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 424-390