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: 662

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
310-662 A El Segundo CA ELSGCA12DS0  9740 PACIFIC BELL 730      
310-662 0 El Segundo CA ELSGCA12DS0  9740 PACIFIC BELL 730      
310-662 1 El Segundo CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2006-11-04   
310-662 2 El Segundo CA ELSGCA12DS0  9740 PACIFIC BELL 730      
310-662 3 El Segundo CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2006-10-10   
310-662 4 El Segundo CA ELSGCA12DS0  9740 PACIFIC BELL 730      
310-662 5 El Segundo CA ELSGCA12DS0  9740 PACIFIC BELL 730      
310-662 6 El Segundo CA ELSGCA12DS0  9740 PACIFIC BELL 730      
310-662 7 El Segundo CA ELSGCA12DS0  9740 PACIFIC BELL 730      
310-662 8 El Segundo CA ELSGCA12DS0  9740 PACIFIC BELL 730      
310-662 9 El Segundo CA ELSGCA12DS0  9740 PACIFIC BELL 730      

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.