231-974 phone numbers

Numbers 231-974-0000 to 231-974-9999 are assigned to 123.net, LLC in Grant, MI. 5 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 231-974-5xxx, 231-974-7xxx, 231-974-8xxx, 231-974-9xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 231-974