Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: CLSPCO11X0X

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
719-770 A Lamar CO 939H COMMIO, LLC 658      
719-770 0 Lamar CO 939H COMMIO, LLC 658   2023-06-04   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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