443-266 phone numbers

Numbers 443-266-0000 to 443-266-9999 are assigned to Bandwidth.com CLEC, LLC (rate centre GLENWOOD, MD, NANPA abbreviation). 3 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 443-266-1xxx, 443-266-4xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 443-266