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: 925 [Rate centres in NPA 925] [Dial plan for NPA 925]

NXX: 433

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
925-433 A Walnut Creek CA OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722      
925-433 0 Walnut Creek CA SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722      
925-433 1 Walnut Creek CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722      
925-433 2 Walnut Creek CA OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722      
925-433 3 Walnut Creek CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722      
925-433 4 Walnut Creek CA OKLDCA03DS5  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722      
925-433 5 Walnut Creek CA OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722      
925-433 6 Walnut Creek CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
925-433 7 Walnut Creek CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
925-433 8 Walnut Creek CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
925-433 9 Walnut Creek CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722      

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.