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: 771

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
951-771 A Woodcrest CA   6529 T-MOBILE USA, INC. 730   2025-06-05   
951-771 0 Woodcrest CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2025-06-06   
951-771 1 Woodcrest CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2025-09-10   
951-771 7 Woodcrest CA   6529 T-MOBILE USA, INC. 730   2025-06-05   
951-771 8 Woodcrest CA   6529 T-MOBILE USA, INC. 730   2025-06-05   
951-771 9 Woodcrest CA   6529 T-MOBILE USA, INC. 730   2025-06-05   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.