443-491 phone numbers

Numbers 443-491-0000 to 443-491-9999 are assigned to Onvoy, LLC (rate centre PARKTON, MD, NANPA abbreviation). 4 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 443-491-0xxx, 443-491-1xxx, 443-491-4xxx, 443-491-5xxx, 443-491-6xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 443-491