406 Area Code Area Codes

Area Code: 406
State/Region: Montana
Major Cities: Billings
Time Zone: Mountain
Current Time: 10:10 AM
Date Assigned: 1/1/1947
In Service Since: 1/1/1947
Overlay?: No
Overlay Complex:
Local Call Dialing: 7D
Toll Call Dialing: 1+10D

406 Prefixes/Exchanges

The three digits following the area code of a phone number are known as the prefix or exchange. The remaining numbers (last 4 digits) all refer to that prefix/exhange.

View Area Code 406 Prefixes ยป

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