Detroit is running out of 313 phone numbers. Here's when the last number could be assigned and what you need to do.

Starting Oct. 7, all Metro Detroit residents will be required to dial 10 digits to complete calls in preparation for the 679 ...

State officials announced the new area code in March, when they began a "permissive dialing period," in which 313 callers were urged to practice using 10-digit dialing for every call, though ...

The 313 area code is running out of numbers, so new customers in Detroit and surrounding areas that use that area code will start getting phone numbers that begin with 679.