638 Area Code

The 638 area code is NOT a valid area code. This area code is NOT officially assigned to a known Numbering Plan Area (NPA). The 638 area code is not assigned to a city/state location.

In most cases with invalid area codes like 638, tend to be used by phone numbers from telemarketing companies.

Last Searched Area Codes
Area CodeCity/State
970Palisade, Colorado
701Hunter, North Dakota
320Dawson, Minnesota