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: 331

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
323-331 A Los Angeles: DA 02 CA IRVECAEIDS0  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 730      
323-331 0 Los Angeles: DA 02 CA   899D METROPCS NETWORKS, LLC 730   2009-12-28   
323-331 1 Los Angeles: DA 02 CA   899D METROPCS NETWORKS, LLC 730   2009-12-28   
323-331 2 Los Angeles: DA 02 CA   899D METROPCS NETWORKS, LLC 730   2009-12-28   
323-331 3 Los Angeles: DA 02 CA   649C ONVOY, LLC - CA 730   2005-09-29   
323-331 4 Los Angeles: DA 02 CA   649C ONVOY, LLC - CA 730   2009-08-31   
323-331 5 Los Angeles: DA 02 CA   899D METROPCS NETWORKS, LLC 730   2007-04-12   
323-331 6 Los Angeles: DA 02 CA   899D METROPCS NETWORKS, LLC 730   2007-04-12   
323-331 7 Los Angeles: DA 02 CA   899D METROPCS NETWORKS, LLC 730   2007-04-12   
323-331 8 Los Angeles: DA 02 CA   899D METROPCS NETWORKS, LLC 730   2007-04-12   
323-331 9 Los Angeles: DA 02 CA   7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 730      

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

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