Area code overlay is the introduction of a new area code to a region. In this case, 457 is being added to the 318 area code ...

First there was 510, then came 925, and now, parts of the East Bay will welcome a new telephone area code: 341. The California Public Utilities Commission approved the new digits Thursday. The 341 ...

When you entered a simple three-digit-number query, Google’s search engine used to provide a handy line showing the location the phone number was registered in.

Telephone customers in Stanislaus, San Joaquin and nearby counties are going to see some changes in the 209 area code starting in October.

A new telephone area code, 835, is coming to Philadelphia's suburbs, as the region is running out of 610 and 484 numbers.

Officials say area code 738 will be activated as an "overlay" of existing area codes 213 and 323. LOS ANGELES (KABC) -- The greater Los Angeles area is getting a new telephone area code.

A new area code is coming to the Hudson Valley. The supply of 845 telephone numbers will be exhausted by 2023, prompting the approval for new three-digit start for calls.

The Public Service Commission of Wisconsin announced today the creation of a new area code to "overlay" the area where the 608 area code is now in service.

The 341 area code for the East Bay will be overlaid upon, that is, mixed in with, phone numbers in the existing 510 area code.

Money Today story on Friday included a list of telephone exchanges that will be getting the 410 area code on Nov. 1. The list did not include 18 exchanges that will be affected. They are: 213, 219,… ...