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The Alliance for Telecommunications Industry Solutions, 12/01/2007
Publisher: ATIS
File Format: PDF
$143.00$286.60
Published:01/12/2007
Guidelines for the Administration of Telephone Numbers
$112.00 $225.31
9YY NXX Code Assignment Guidelines
$134.00 $268.46
Location Routing Number (LRN) Assignment Practices
$125.00 $250.76
Personal Communications Services (PCS) 5YY NXX Code Assignment guidelines
$102.00 $205.59