Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 310 [Rate centres in NPA 310] [Dial plan for NPA 310]

NXX: 668

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
310-668 A Compton: Compton DA CA CMTNCA01DS0  9740 PACIFIC BELL 730      
310-668 0 Compton: Compton DA CA   9740 PACIFIC BELL 730      
310-668 1 Compton: Compton DA CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2006-06-02   
310-668 2 Compton: Compton DA CA   9740 PACIFIC BELL 730      
310-668 3 Compton: Compton DA CA   9740 PACIFIC BELL 730      
310-668 4 Compton: Compton DA CA   9740 PACIFIC BELL 730      
310-668 5 Compton: Compton DA CA   9740 PACIFIC BELL 730      
310-668 6 Compton: Compton DA CA   9740 PACIFIC BELL 730      
310-668 7 Compton: Compton DA CA   9740 PACIFIC BELL 730      
310-668 8 Compton: Compton DA CA   9740 PACIFIC BELL 730      
310-668 9 Compton: Compton DA CA   9740 PACIFIC BELL 730      

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

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