Minnesota – New 507/924 area code overlay

To ensure a continuing supply of telephone numbers, the new 924 area code will be added to the current 507 area code region. This is known as an area code overlay.

The overlay does not require you to change your existing area code or phone number.

Staring January 30, 2024, you should begin dialing the area code + telephone number whenever you place a call. If you forget and dial just seven digits, your call will still be completed.

Effective July 30, 2024, you must dial the area code + telephone number on all calls, including calls within the 507 area code. if you do not dial the area code + telephone number, your calls will not complete and a recording will instruct you to hang up and dial again, including the area code.

Beginning August 30, 2024, new telephone lines or services may be assigned the new 924 area code. If you have a number in the new 924 area code, you must dial the area code + telephone number or the call will not complete.

Download a copy of the bill message on your Frontier bill

Questions? Contact us or visit the Minnesota Public Utilities Commission website.