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: 840 [Rate centres in NPA 840] [Dial plan for NPA 840]

NXX: 243

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
840-243 A Pomona CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730      
840-243 0 Pomona CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730      
840-243 1 Pomona CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730      
840-243 2 Pomona CA   6010 NEW CINGULAR WIRELESS PCS, LLC 730      
840-243 3 Pomona CA   6010 NEW CINGULAR WIRELESS PCS, LLC 730      
840-243 4 Pomona CA   6010 NEW CINGULAR WIRELESS PCS, LLC 730      
840-243 5 Pomona CA   6010 NEW CINGULAR WIRELESS PCS, LLC 730      
840-243 6 Pomona CA   6529 T-MOBILE USA, INC. 730      
840-243 7 Pomona CA   6529 T-MOBILE USA, INC. 730      
840-243 8 Pomona CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730      
840-243 9 Pomona CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730      

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.