Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 310 [Rate centres in NPA 310] [Dial plan for NPA 310]

NXX: 900

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
310-900 A Compton: Compton DA CA CMTNCA01DS1  9740 PACIFIC BELL 730      
310-900 0 Compton: Compton DA CA CMTNCA01DS1  9740 PACIFIC BELL 730      
310-900 1 Compton: Compton DA CA CMTNCA01DS1  9740 PACIFIC BELL 730      
310-900 2 Compton: Compton DA CA CMTNCA01DS1  9740 PACIFIC BELL 730      
310-900 3 Compton: Compton DA CA CMTNCA01DS1  9740 PACIFIC BELL 730      
310-900 4 Compton: Compton DA CA CMTNCA01DS1  9740 PACIFIC BELL 730      
310-900 5 Compton: Compton DA CA CMTNCA01DS1  9740 PACIFIC BELL 730      
310-900 6 Compton: Compton DA CA CMTNCA01DS1  9740 PACIFIC BELL 730      
310-900 7 Compton: Compton DA CA CMTNCA01DS1  9740 PACIFIC BELL 730      
310-900 8 Compton: Compton DA CA CMTNCA01DS1  9740 PACIFIC BELL 730      
310-900 9 Compton: Compton DA CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2006-02-17   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.