257 Area Code

The 257 area code is NOT a valid area code. This area code is NOT officially assigned to a known Numbering Plan Area (NPA). The 257 area code is not assigned to a city/state location.

In most cases with invalid area codes like 257, tend to be used by phone numbers from telemarketing companies.

Last Searched Area Codes
Area CodeCity/State
320Onamia, Minnesota
607Savona, New York
337Vinton, Louisiana