618-591 phone numbers

Numbers 618-591-0000 to 618-591-9999 are assigned to Onvoy, LLC in Eldorado, IL. 3 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 618-591-6xxx, 618-591-9xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 618-591