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: 271

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
323-271 A Montebello CA LSANCA35DS0  9740 PACIFIC BELL 730      
323-271 0 Montebello CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2005-02-02   
323-271 1 Montebello CA   829J PAETEC ITEL, LLC 730   2004-09-20   
323-271 2 Montebello CA   6529 T-MOBILE USA, INC. 730   2005-02-10   
323-271 3 Montebello CA   9740 PACIFIC BELL 730      
323-271 4 Montebello CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2003-01-10   
323-271 5 Montebello CA   899D METROPCS NETWORKS, LLC 730   2005-02-10   
323-271 6 Montebello CA   6529 T-MOBILE USA, INC. 730   2004-12-30   
323-271 7 Montebello CA   6529 T-MOBILE USA, INC. 730   2005-01-13   
323-271 8 Montebello CA   899D METROPCS NETWORKS, LLC 730   2004-10-05   
323-271 9 Montebello CA   899D METROPCS NETWORKS, LLC 730   2004-10-05   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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