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: 336

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
840-336 A Colton CA LSANCAJWIMD  965H FRACTEL, LLC 730      
840-336 0 Colton CA LSANCARC32Z  073H TELNYX LLC 730   2022-04-22   
840-336 1 Colton CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2022-05-20   
840-336 2 Colton CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2022-05-20   
840-336 3 Colton CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2022-07-14   
840-336 4 Colton CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2022-07-14   
840-336 5 Colton CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2023-04-07   
840-336 6 Colton CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2022-09-19   
840-336 7 Colton CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2022-09-16   
840-336 8 Colton CA LSANCAJWIMD  965H FRACTEL, LLC 730   2022-04-21   
840-336 9 Colton CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2022-09-16   

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.