← Area code 540
540-601 phone numbers
Numbers 540-601-0000 to 540-601-9999 are assigned to Level 3 Communications, LLC (rate centre BLUE GRASS, VA, NANPA abbreviation).
Not assigned to any carrier: 540-601-0xxx, 540-601-1xxx, 540-601-3xxx, 540-601-4xxx, 540-601-5xxx, 540-601-6xxx, 540-601-7xxx, 540-601-8xxx, 540-601-9xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.