INDIANAPOLIS - Telephone users in southern Indiana's 812 area code should dial 10 numbers beginning Saturday.
State officials are instructing them to include the area code any time they make a phone call, not just on calls to different area codes. Local calls without the area code will still work until early September to give people adequate time to adjust to the change.
The Indiana Office of Utility Consumer Counselor says the change is necessary for the introduction of the new 930 area code this fall.
The 930 area code is being introduced because all possible numbers for 812 will be exhausted in 2015.
The 812 area code has been in effect since 1947 and covers areas including Evansville, Terre Haute, Bloomington and New Albany.