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: 951 [Rate centres in NPA 951] [Dial plan for NPA 951]

NXX: 642

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
951-642 A Corona CA RVSDCALBCM4  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
951-642 0 Corona CA RVSDCALBCM4  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
951-642 1 Corona CA RVSDCALBCM4  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
951-642 2 Corona CA RVSDCALBCM4  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
951-642 3 Corona CA RVSDCALBCM4  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
951-642 4 Corona CA RVSDCALBCM4  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
951-642 5 Corona CA RVSDCALBCM4  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
951-642 6 Corona CA RVSDCAYAGT1  899D METROPCS NETWORKS, LLC 730   2011-07-25   
951-642 7 Corona CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2005-01-21   
951-642 8 Corona CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2005-04-11   
951-642 9 Corona CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2004-10-28   

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.