If your phone number starts with 334, starting this month you'll need to add the area code to all local calls.

BUTLER, WARREN COUNTIES — The Public Utilities Commission of Ohio on Wednesday approved a plan to overlay a new area code over the existing 513 area code. The area code, which covers southwest Ohio, ...

A new 274 area code prefix will join phone numbers in the 920 area code Friday, the Public Service Commission of Wisconsin announced early April. The 920 area code will soon start running short on new ...

The last 937 area code numbers are being assigned to phone carriers in the Miami Valley, and a new area code will be rolled out in about two months. The new 326 area code will overlay the existing ...