Phone customers in the 313 area code, which covers Detroit and several suburbs, will have to start including the area code when making local calls. The new change comes because they are getting low on ...

Metro Detroit residents are now required to dial 10 digits for phone calls. Starting on Oct. 7, all local calls made within the 313 area code must be placed using 10 digits. This includes the area ...

East Tennessee has another new area code, and it's going to add three more digits to many people's local calls. Starting Aug. 5, people in upper and lower East Tennessee in the 423 area code region ...

Starting October 7, customers within the 313 area code will be required to dial 10 digits for all local calls. The change comes as preparation for the introduction of a new 679 area code. The 313 area ...

With new telephone numbers in high demand, the Tennessee Public Utility Commission approved the addition of the new 729 area code to the existing 423 area code region, which covers two non-contiguous ...