401-399 phone numbers

Numbers 401-399-0000 to 401-399-9999 are assigned to Onvoy, LLC in Newport, RI. 2 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 401-399-0xxx, 401-399-2xxx, 401-399-9xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 401-399