666 Area Code

The 666 area code is NOT a valid area code. This area code is NOT officially assigned to a known Numbering Plan Area (NPA). The 666 area code is not assigned to a city/state location.

In most cases with invalid area codes like 666, tend to be used by phone numbers from telemarketing companies.

Last Searched Area Codes
Area CodeCity/State
806Petersburg, Texas
732Middletown, New Jersey
217Paris, Illinois