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The Alliance for Telecommunications Industry Solutions, 04/01/2017
Publisher: ATIS
File Format: PDF
$108.00$216.72
Published:01/04/2017
NPA Code Relief Planning and Notification Guidelines
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Carrier Identification Code (CIC) Assignment Guidelines
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9YY NXX Code Assignment Guidelines
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Thousands-Block Number (NXX-X) Pooling Administration Guidelines
$114.00 $228.87
