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Document Name:  555 NXX Assignment Guidelines
Document Date:  June, 2015
Document Number:  ATIS-0300048
Document Version: 
Committee:  INC
Collaborating Forum(s): 
Document Type:  Guidelines
Abstract:  THIS DOCUMENT WAS SUPERSEDED BY ATIS-0300115, 555 NXX LINE NUMBER REFERENCE DOCUMENT. This document specifies guidelines for the assignment of line numbers within the 555 NXX code. The intended use for 555 numbers for which these guidelines apply include the provisioning of information services but may include a broad range of existing and future services as well. These guidelines currently apply only to the assignment of 555 numbers in geographic NPAs.
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File Size: 
Number of Pages:  0
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