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: 642

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
310-642 A Inglewood CA LSANCA07DS0  9740 PACIFIC BELL 730      
310-642 0 Inglewood CA LSANCA07DS0  9740 PACIFIC BELL 730      
310-642 1 Inglewood CA LSANCA07DS0  9740 PACIFIC BELL 730      
310-642 2 Inglewood CA LSANCA07DS0  9740 PACIFIC BELL 730      
310-642 3 Inglewood CA LSANCA07DS0  9740 PACIFIC BELL 730      
310-642 4 Inglewood CA LSANCA07DS0  9740 PACIFIC BELL 730      
310-642 5 Inglewood CA LSANCA07DS0  9740 PACIFIC BELL 730      
310-642 6 Inglewood CA LSANCA07DS0  9740 PACIFIC BELL 730      
310-642 7 Inglewood CA LSANCA07DS0  9740 PACIFIC BELL 730      
310-642 8 Inglewood CA TRNECAGBGT3  899D METROPCS NETWORKS, LLC 730      
310-642 9 Inglewood CA LSANCA07DS0  9740 PACIFIC BELL 730      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.