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: 303

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
925-303 A Antioch CA OKLDCAEBDS0  7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 722      
925-303 0 Antioch CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2007-07-23   
925-303 1 Antioch CA OKLDCAEBDS0  7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 722      
925-303 2 Antioch CA OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722   2007-07-21   
925-303 3 Antioch CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722   2007-03-24   
925-303 4 Antioch CA SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2005-04-25   
925-303 5 Antioch CA CNCRCADOCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2006-12-08   
925-303 6 Antioch CA CNCRCADOCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2006-10-07   
925-303 7 Antioch CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722   2009-01-19   
925-303 8 Antioch CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2010-02-26   
925-303 9 Antioch CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2009-05-02   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.