618-709 phone numbers

Numbers 618-709-0000 to 618-709-9999 are assigned to T-Mobile USA, Inc. (rate centre GRANITE CY, IL, NANPA abbreviation). 3 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 618-709