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: 442

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
909-442 A Rialto CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730      
909-442 0 Rialto CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2017-01-01   
909-442 1 Rialto CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2017-01-01   
909-442 2 Rialto CA RVSDCAYAGT1  899D METROPCS NETWORKS, LLC 730   2017-01-01   
909-442 3 Rialto CA RVSDCAYAGT1  899D METROPCS NETWORKS, LLC 730   2017-03-27   
909-442 4 Rialto CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2017-05-18   
909-442 5 Rialto CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2017-05-18   
909-442 6 Rialto CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2017-01-02   
909-442 7 Rialto CA   026K BARR TELL USA, LLC 730   2022-08-08   
909-442 8 Rialto CA RVSDCAYAGT1  899D METROPCS NETWORKS, LLC 730   2017-10-14   
909-442 9 Rialto CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2016-12-31   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.