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

All customers with the 423 area code should prepare for mandatory 10-digit dialing and the introduction of the new 729 area code. Starting Aug. 5, all local calls made within the 423 area code ...

Identify your telephone number as a 10-digit number and include the area code when giving the number to friends, family, business associates and customers, etc.

10-digit dialing coming to 507 area code region Beginning July 30, 2024, all local calls made within the 507 area code region must be placed using 10 digits (area code + the 7-digit telephone number).

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 ...