Std

ATIS 0300055(2022-07)

NPA Allocation Plan & Assignment Guidelines

standard by The Alliance for Telecommunications Industry Solutions , 07/01/2022

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This document specifies guidelines for the assignment of Numbering Plan Area (NPA) codes. NPA codes are the first three digits of the 10-digit North American Numbering Plan (NANP) format (the format is made up of 10 digits in the form of NXX-NXX-XXXX). NPA codes have traditionally been used to identify distinct exclusive geographic areas, commonly referred to as area codes.

 

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Published:
07/01/2022
File Size:
1 file , 1.4 MB
 

Document History

  1. ATIS 0300055(2022-07)

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    NPA Allocation Plan & Assignment Guidelines

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  2. ATIS 0300055(2021-07)


    NPA Allocation Plan & Assignment Guidelines

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  3. ATIS 0300055(2020-11)


    NPA Allocation Plan & Assignment Guidelines

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  4. ATIS 0300055(2019-02)


    NPA Allocation Plan and Assignment Guidelines

    • Historical Version

  5. ATIS 0300055


    NPA Allocation Plan and Assignment Guidelines

    • Historical Version

  6. ATIS 0300055


    NPA Allocation Plan and Assignment Guidelines

    • Historical Version

  7. ATIS 0300055


    NPA Allocation Plan and Assignment Guidelines

    • Historical Version

  8. ATIS 0300055


    NPA Allocation Plan and Assignment Guidelines

    • Historical Version

  9. ATIS 0300055


    NPA Allocation Plan and Assignment Guidelines

    • Historical Version

  10. ATIS 0300055


    NPA Allocation Plan and Assignment Guidelines

    • Historical Version

  11. ATIS 0300055


    NPA Allocation Plan and Assignment Guidelines

    • Historical Version

  12. ATIS 0300055


    NPA Allocation Plan and Assignment Guidelines

    • Historical Version

  13. ATIS 0300055


    NPA Allocation Plan and Assignment Guidelines

    • Historical Version

  14. ATIS 0300055


    NPA Allocation Plan & Assignment Guidelines

    • Historical Version