443-317 phone numbers

Numbers 443-317-0000 to 443-317-9999 are assigned to Bandwidth.com CLEC, LLC (rate centre CHASE, MD, NANPA abbreviation). 4 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 443-317-0xxx, 443-317-1xxx, 443-317-4xxx, 443-317-5xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 443-317