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The Alliance for Telecommunications Industry Solutions, 09/26/2014
Publisher: ATIS
File Format: PDF
$149.00$298.72
Published:26/09/2014
Pages:155
Thousands-Block Number (NXX-X) Pooling Administration Guidelines
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CENTRAL OFFICE CODE (NXX) ASSIGNMENT GUIDELINES (COCAG)
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NPA Code Relief Planning and Notification Guidelines
$136.00 $273.98
Personal Communications Services (PCS) 5YY NXX Code Assignment guidelines
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