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: 990

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
909-990 A Rialto CA SHOKCA022MD  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730      
909-990 0 Rialto CA SHOKCA022MD  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2013-08-22   
909-990 1 Rialto CA LSANCAJWDS9  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 730   2013-08-23   
909-990 2 Rialto CA LSANCAJWDS9  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 730   2013-08-23   
909-990 3 Rialto CA SHOKCA022MD  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2014-04-11   
909-990 4 Rialto CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2014-10-26   
909-990 5 Rialto CA ANHMCA01XEY  516C AT&T CORP. 730   2014-03-05   
909-990 6 Rialto CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2014-11-13   
909-990 7 Rialto CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2020-11-11   
909-990 8 Rialto CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2014-09-29   
909-990 9 Rialto CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2020-11-11   

Last updated: Sat, 02 May 2026 12:20:53 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.