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The Alliance for Telecommunications Industry Solutions, 11/09/2012
Publisher: ATIS
File Format: PDF
$112.00$225.54
Published:09/11/2012
Pages:21
9YY NXX Code Assignment Guidelines
$138.00 $276.26
Thousands-Block Number (NXX-X) Pooling Administration Guidelines
$114.00 $228.87
P-ANI Administration Guidelines
$132.00 $265.26
Central Office Code (NXX) Assignment Guidelines (COCAG)
$125.00 $250.88