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: 357

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
925-357 A Walnut Creek CA SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
925-357 0 Walnut Creek CA CNCRCADOCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-357 1 Walnut Creek CA CNCRCADOCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-357 2 Walnut Creek CA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
925-357 3 Walnut Creek CA SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
925-357 4 Walnut Creek CA HYWRCAMCDS0  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 722      
925-357 5 Walnut Creek CA CNCRCADOCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-357 6 Walnut Creek CA OKLDCAMP1MD  4733 PAETEC COMMUNICATIONS, INC. - CA 722      
925-357 7 Walnut Creek CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722      
925-357 8 Walnut Creek CA SNFCCAMMDS0  485E ASTOUND BROADBAND, LLC - CA 722      
925-357 9 Walnut Creek CA SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.