734-443 phone numbers

Numbers 734-443-0000 to 734-443-9999 are assigned to Level 3 Communications, LLC (rate centre NEW BOSTON, MI, NANPA abbreviation). 7 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 734-443-1xxx, 734-443-9xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 734-443