These 82 area codes (across 35 states) are now required to dial 10 digits for local calls
Seven-digit dialing is out, 10-digit dialing is in.
Starting Sunday, Oct. 24, callers in 82 area codes across 35 states and one U.S. territory will be required to use their three-digit area code before punching in the seven-digit phone number when calling a local number, according to the Federal Communications Commission.
Current phone numbers won't change, but phone calls dialed without the area code after the October deadline won't be connected.
Some area codes use 988 as a local exchange, or the first three numbers in a seven-digit phone number that allow for local calling without the area code. Requiring the three-digit area code for local calls will make way for the National Suicide Prevention Lifeline's new nationwide three-digit phone number, 988. The number will be active by July 16, 2022.
These states and area codes are part of the FCC changes that begin Sunday:
Alaska: 907
Alabama: 251
Arkansas: 501
Arizona: 480, 520, 928
California: 209, 530, 562, 626, 650, 707, 925, 949, 951
Colorado: 719, 970
Delaware: 302
Florida: 321 (Brevard County only), 352, 561, 941
Georgia: 478, 912
Guam: 671
Hawaii: 808
Illinois: 309, 618, 708
Indiana: 219, 574
Iowa: 319, 515
Kansas: 620, 785
Kentucky: 859
Louisiana: 337, 504
Michigan: 616, 810, 906, 989
Minnesota: 218, 952
Mississippi: 662
Missouri: 314, 417, 660, 816
Montana: 406
Nevada: 775
New Hampshire: 603
New Jersey: 856, 908
New Mexico: 505, 575
New York: 516, 607, 716, 845, 914
North Carolina: 910
Ohio: 440, 513
South Dakota: 605
Tennessee: 731, 865
Texas: 254, 361, 409, 806, 830, 915, 940
Vermont: 802
Virginia: 276, 804
Washington: 509
Wisconsin: 262, 414, 608, 920
This article originally appeared on USA TODAY: Dial that area code: FCC requires these places to use on local calls