Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: SNLOCA01Y1X

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
820-202 A San Luis Obispo CA 425J CSC WIRELESS, LLC 740      
820-202 2 San Luis Obispo CA 425J CSC WIRELESS, LLC 740   2020-04-10   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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