618-443 phone numbers

Numbers 618-443-0000 to 618-443-9999 are assigned to Frontier North, Inc. in Sparta, IL. 2 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 618-443-0xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 618-443