← Area code 618
618-609 phone numbers
Numbers 618-609-0000 to 618-609-9999 are assigned to New Cingular Wireless PCS, LLC in Grayville, IL. 1 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 618-609-0xxx, 618-609-1xxx, 618-609-3xxx, 618-609-4xxx, 618-609-5xxx, 618-609-6xxx, 618-609-7xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.