Working Documents
Working documents refer to working drafts/works
in progress, contributions and other documentation that may not
have reached industry consensus and should not be construed as agreed
upon or final. Neither ATIS nor INC makes any representation or
warranty, express or implied, with respect to the sufficiency, accuracy,
or utility of the information or opinion contained or reflected
in the material utilized. In addition, ATIS and INC expressly advise
that any use of or reliance upon the material in these working directories
is at your own risk. Neither ATIS nor INC shall be liable for damage
or injury, of whatever nature, incurred by any person arising out
of any use of the material. It is possible this material will at
some future date be included in a copyrighted work by ATIS. All
INC working documents are available as Microsoft Word documents. Only the most recent versions of Working Documents are displayed. Please use the following link to view Working Documents Archives.
Please note that documents not currently being worked are not listed on the Working Documents page. Documents listed below display changes suggested in Issues that are in Initial Closure or remain in Initial Pending, in addition to Active issues with tentatively incorporated contributions.
555-NXX Code Assignment Guidelines
800-855 Number Assignment Guidelines
9YY NXX Code Assignment Guidelines
CIC Assignment Guidelines
COCAG
Guideline |
Attachments, Forms, and Appendices |
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International Inbound NPA Assignment Guidelines
Location Routing Number Assignment Practices
NPA Allocation Plan and Assignment Guidelines
NPA Code Relief Planning and Notification Guidelines
NRUF Guidelines
PCS 5YY NXX Code Assignment Guidelines
Permanent P-ANI Administration Guidelines
Guideline |
Attachments, Forms, and Appendices |
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Procedural Agreements Reached
TBPAG
Guideline |
Attachments, Forms, and Appendices |
1/20/12 (Issue 698, Initial Pending)
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TN Administration Guidelines
VSC Assignment Guidelines
Tabled Issues (VoIP Subcommittee)
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