Transition to 10-digit dialing for 988

Service Providers operating in the NPAs required to transition to 10-digit dialing for 988 National Suicide Prevention Lifeline

Information below pertains to the FCC Order 20-100, which designated 988 as the 3-digit abbreviated dialing code to access the National Suicide Prevention Lifeline, and the requirement to transition to 10-digit dialing in the 82 area codes that currently permit 7-digit dialing and also use 988 as a Central Office code. The affected states and area codes, implementation schedule, standard dialing plan, and milestones of the project can be located at, under Publications/Planning Letters - Planning Letter 556.

Frequently Asked Questions (updated 01/08/2021)

Permissive Dialing Press Release Issued by NANPA on 3/29/2021


Links to the FCC website:


NPAs Required to Transition to 10-Digit Dialing
List of States and NPAs transitioning to 10-Digit Dialing


Sample Customer Education Letters


Sample Press Release


Tracking Progress of Transition


988 Milestone Confirmation Template


For 988 related questions, please contact NANPA at

For all other questions, please contact NANPA at

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