ATIS 0300119(2021-01)

Thousands-Block (NPA-NXX-X) & Central Office Code (NPA-NXX) Assignment Guidelines (TBCOCAG)

The Alliance for Telecommunications Industry Solutions,

Publisher: ATIS

File Format: PDF

$142.00$285.54

Description

This document specifies guidelines for the administration and assignment of Central Office (CO) Codes (NPA-NXX) and Thousands-Blocks (NPA-NXX-Xs) to Local Number Portability (LNP)-capable Service Provider (SPs) within geographic numbering plan areas (NPAs).

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