309-491 phone numbers

Numbers 309-491-0000 to 309-491-9999 are assigned to Mediacom Telephony of Illinois, LLC in McLean, IL. 3 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 309-491-0xxx, 309-491-2xxx, 309-491-3xxx, 309-491-5xxx, 309-491-6xxx, 309-491-7xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 309-491