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: 543

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
909-543 A Rialto CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
909-543 0 Rialto CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2005-08-21   
909-543 1 Rialto CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2005-08-21   
909-543 2 Rialto CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2006-05-01   
909-543 3 Rialto CA LSANCARC80Z  9262 UTILITY TELECOM GROUP, LLC - CA 730   2012-07-10   
909-543 4 Rialto CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2005-08-21   
909-543 5 Rialto CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2005-09-18   
909-543 6 Rialto CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2005-11-05   
909-543 7 Rialto CA RVSDCALBCM4  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2005-11-09   
909-543 8 Rialto CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2005-10-14   
909-543 9 Rialto CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2005-10-14   

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.