KNOXVILLE, Tenn. (WVLT) - With a new area code coming to East Tennessee in September, 10-digit dialing will be required beginning next week.

Local calls made in parts of East Tennessee's 423 area code, including Chattanooga, will need to be made dialing 10 digits soon because of a new area code: 729.

SPOKANE, Wash. — The only area code in Washington that allows seven-digit dialing for phone calls is 509. Beginning Sunday, callers will all dial the same way in the state, by using 10-digit ...

A new 10-digit dialing requirement begins Nov. 7, when the 679 area code will officially overlap with what is now solely a 313 district.

The Florida Public Service Commission says for people who have 904 as their area code, they'll have to start 10-digit dialing beginning on Jan. 29.

Mid-Missouri callers are advised to prepare for 10-digit local dialing as a new area code is established to cover the area.