← Area code 540
540-863 phone numbers
Numbers 540-863-0000 to 540-863-9999 are assigned to Lumos Telephone LLC (rate centre CLIFTNFORG, VA, NANPA abbreviation). 3 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 540-863-4xxx, 540-863-9xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.