704-257 phone numbers

Numbers 704-257-0000 to 704-257-9999 are assigned to Level 3 Communications, LLC in Denver, NC. 3 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 704-257-2xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 704-257