← Area code 501
501-535 phone numbers
Numbers 501-535-0000 to 501-535-9999 are assigned to Ton80 Communications, LLC in Bald Knob, AR. 2 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 501-535-1xxx, 501-535-2xxx, 501-535-3xxx, 501-535-4xxx, 501-535-7xxx, 501-535-8xxx, 501-535-9xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.