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: 541

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
909-541 A Claremont-San Dimas CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730      
909-541 0 Claremont-San Dimas CA RVSDCALBCM4  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2014-10-03   
909-541 1 Claremont-San Dimas CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2014-10-09   
909-541 2 Claremont-San Dimas CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2014-10-09   
909-541 3 Claremont-San Dimas CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2014-10-09   
909-541 4 Claremont-San Dimas CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2014-10-09   
909-541 5 Claremont-San Dimas CA COVNCAXFXUX  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2014-12-17   
909-541 6 Claremont-San Dimas CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2014-10-07   
909-541 7 Claremont-San Dimas CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2014-10-07   
909-541 8 Claremont-San Dimas CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2014-10-02   
909-541 9 Claremont-San Dimas CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2014-10-02   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.