618-587 phone numbers

Numbers 618-587-0000 to 618-587-9999 are assigned to Frontier North, Inc. in Tilden, IL. 3 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 618-587-3xxx, 618-587-4xxx, 618-587-5xxx, 618-587-6xxx, 618-587-9xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 618-587