← Area code 989
989-409 phone numbers
Numbers 989-409-0000 to 989-409-9999 are assigned to Frontier North, Inc. in Alma, MI. 1 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 989-409-0xxx, 989-409-1xxx, 989-409-2xxx, 989-409-3xxx, 989-409-5xxx, 989-409-6xxx, 989-409-7xxx, 989-409-8xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.