what area code is 448
Home | 448 Area Code. The 448 area code is NOT a valid area code. This area code is NOT officially assigned to a known Numbering Plan Area (NPA). The 448 area code is not assigned to a city/state location.In most cases with invalid area codes like 448, tend to be used by phone numbers from telemarketing companies.he 448 area code is NOT a valid area code. This area code is NOT officially assigned to a known Numbering Plan Area (NPA).