← Area code 309
309-628 phone numbers
Numbers 309-628-0000 to 309-628-9999 are assigned to Level 3 Communications, LLC in Aledo, IL. 3 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 309-628-1xxx, 309-628-2xxx, 309-628-3xxx, 309-628-4xxx, 309-628-5xxx, 309-628-6xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.