← Area code 309
309-625 phone numbers
Numbers 309-625-0000 to 309-625-9999 are assigned to Mediacom Telephony of Illinois, LLC in Aledo, IL. 1 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 309-625-1xxx, 309-625-2xxx, 309-625-3xxx, 309-625-4xxx, 309-625-5xxx, 309-625-6xxx, 309-625-7xxx, 309-625-8xxx, 309-625-9xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.