← Area code 618
618-645 phone numbers
Numbers 618-645-0000 to 618-645-9999 are assigned to New Cingular Wireless PCS, LLC in Metropolis, IL. 1 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 618-645-5xxx, 618-645-6xxx, 618-645-7xxx, 618-645-8xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.