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: 909 [Rate centres in NPA 909] [Dial plan for NPA 909]

NXX: 237

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
909-237 A Rialto CA LSANCA54ZMD  8690 GLOBAL CROSSING LOCAL SERVICES, INC. - CA 730      
909-237 0 Rialto CA LSANCAJWDS5  258E YMAX COMMUNICATIONS CORP. - CA 730   2008-07-06   
909-237 1 Rialto CA LSANCAJWDS5  258E YMAX COMMUNICATIONS CORP. - CA 730   2008-07-06   
909-237 2 Rialto CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2007-10-16   
909-237 3 Rialto CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2012-07-06   
909-237 4 Rialto CA LSANCAJWDS5  258E YMAX COMMUNICATIONS CORP. - CA 730   2008-05-07   
909-237 5 Rialto CA LSANCAJWDS5  258E YMAX COMMUNICATIONS CORP. - CA 730   2008-05-19   
909-237 6 Rialto CA LSANCAJWDS5  258E YMAX COMMUNICATIONS CORP. - CA 730   2008-05-19   
909-237 7 Rialto CA LSANCA54ZMD  8690 GLOBAL CROSSING LOCAL SERVICES, INC. - CA 730   2007-07-05   
909-237 8 Rialto CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2012-08-11   
909-237 9 Rialto CA LSANCAJWDS5  258E YMAX COMMUNICATIONS CORP. - CA 730   2008-03-22   

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.