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: 423

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
951-423 A Perris CA LSANCAJW2MD  508J CENTURYLINK COMMUNICATIONS, LLC 730      
951-423 0 Perris CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730      
951-423 1 Perris CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730      
951-423 2 Perris CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
951-423 3 Perris CA   321J HD CARRIER LLC 730      
951-423 4 Perris CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730      
951-423 5 Perris CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730      
951-423 6 Perris CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730      
951-423 7 Perris CA LSANCAJW2MD  508J CENTURYLINK COMMUNICATIONS, LLC 730      
951-423 8 Perris CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730      
951-423 9 Perris CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.