501-635 phone numbers

Numbers 501-635-0000 to 501-635-9999 are assigned to Level 3 Communications, LLC in Little Rock, AR. 1 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 501-635-0xxx, 501-635-1xxx, 501-635-2xxx, 501-635-3xxx, 501-635-4xxx, 501-635-6xxx, 501-635-7xxx, 501-635-8xxx — calls from these use spoofed caller IDs.

Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.

Reported numbers in 501-635