ATIS 0300115(2017-01)

555 NXX Line Number Reference Document

The Alliance for Telecommunications Industry Solutions , 01/10/2017

Publisher: ATIS

File Format: PDF

$80.00$160.33


The purpose of this document is to capture the history of the 555 NXX line numbers, including the uses prior to the creation of the 555 NXX Assignment Guidelines in 1994, to the sunset of the Guidelines in 2016. This document also addresses issues associated with implementation, a summary of assignment data, the Industry Numbering Committee's (INC) 2016 agreement to sunset the 555 NXX Assignment Guidelines, and agreement that the future of 555 line numbers will be determined if a need for the resource is identified and agreed to by INC.

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