AREA CODES (NPAs) REQUIRED TO TRANSITION TO 10-DIGIT DIALING
The following 82 area codes1 currently permit 7-digit dialing and also use 988 as a central office code. Providers operating in these NPAs must implement 10-digit dialing. Transitioning to 10-digit dialing involves both the technical work needed to implement mandatory 10-digit dialing as well as educating consumers about the transition:

STATE
NPAs AFFECTED
TOTAL NPAs
Alaska
907
1
Alabama
251
1
Arkansas
501
1
Arizona
480, 520, 928
3
California
209, 530, 562, 626, 650, 707, 925, 949, 951
9
Colorado
719, 970
2
Delaware
302
1
Florida
321 (Brevard County only), 352, 561, 941
4
Georgia
478, 912
2
Guam
671
1
Hawaii
808
1
Illinois
309, 618, 708
3
Indiana
219, 574
2
Iowa
319, 515
2
Kansas
620, 785
2
Kentucky
859
1
Louisiana
337, 504
2
Michigan
616, 810, 906, 989
4
Minnesota
218, 952
2
Mississippi
662
1
Missouri
314, 417, 660, 816
4
Montana
406
1
Nevada
775
1
New Hampshire
603
1
New Jersey
856, 908
2
New Mexico
505, 575
2
New York
516, 607, 716, 845, 914
5
North Carolina
910
1
Ohio
440, 513
2
South Dakota
605
1
Tennessee
731, 865
2
Texas
254, 361, 409, 806, 830, 915, 940
7
Vermont
802
1
Virginia
276, 804
2
Washington
509
1
Wisconsin
262, 414, 608, 920
4
TOTAL NPAs

82



1 The list of 87 area codes was reduced to 82 area codes after removing five area codes that are either already transitioning to 10- digit dialing due to an overlay or due to the return of 904-988 and 701-988.