Mandatory 10-Digit Dialing Begins on Oct. 24 for Specific Area Codes

Affected Carriers Must Send Contact Info to NANPA

This Sunday, October 24 is the deadline for carriers in the 82 area codes to implement 10-digit dialing in advance of the launch of the new three-digit code 988 this summer for the National Suicide Prevention and Mental Health Crisis hotline. All telecommunications carriers and interconnected VoIP service providers in areas that both use seven-digit dialing and use 988 as the first three numbers in seven-digit phone numbers must implement 10-digit dialing for all local calls.

In addition, all companies are required to make any necessary changes to their networks before July 16, 2022, to allow callers to dial 988 to reach the National Suicide Prevention and Mental Health Crisis hotline number, 1-800-273-8255 (TALK).

Carrier Troubleshooting Contact Information
The North American Numbering Plan Administrator (NANPA), which is managing the 10-digit dialing transition, has compiled a list of carrier contacts to be used only for troubleshooting issues to ensure all impacted carriers transition to 10-digit dialing as smoothly as possible.

Carriers transitioning to 10-digit dialing must provide their company’s troubleshooting contact information to the NANPA as soon as possible if they have not already.

The troubleshooting contact information must include: Provider Name, Primary Contact, Telephone Number(s), Hours of Operation, Backup Contact/Escalations, Email Address and Telephone Number(s).

Impacted NPAs
The area codes now required to transition to 10-digit dialing are:

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), 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

If you have any questions regarding 10-digit dialing or need assistance reporting your troubleshooting contact to the NANPA, please contact a member of our team by clicking the button below.

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