Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 323 [Rate centres in NPA 323] [Dial plan for NPA 323]

NXX: 900

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
323-900 A Los Angeles: DA 13 CA LSANCA10DS1  9740 PACIFIC BELL 730      
323-900 0 Los Angeles: DA 13 CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2007-12-04   
323-900 1 Los Angeles: DA 13 CA   9740 PACIFIC BELL 730      
323-900 2 Los Angeles: DA 13 CA   9740 PACIFIC BELL 730      
323-900 3 Los Angeles: DA 13 CA   9740 PACIFIC BELL 730      
323-900 4 Los Angeles: DA 13 CA   9740 PACIFIC BELL 730      
323-900 5 Los Angeles: DA 13 CA   649C ONVOY, LLC - CA 730   2011-02-10   
323-900 6 Los Angeles: DA 13 CA   9740 PACIFIC BELL 730      
323-900 7 Los Angeles: DA 13 CA   9740 PACIFIC BELL 730      
323-900 8 Los Angeles: DA 13 CA   9740 PACIFIC BELL 730      
323-900 9 Los Angeles: DA 13 CA   899D METROPCS NETWORKS, LLC 730   2007-06-23   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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