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: 657 [Rate centres in NPA 657] [Dial plan for NPA 657]

NXX: 253

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
657-253 A Fullerton CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730      
657-253 0 Fullerton CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2015-08-25   
657-253 1 Fullerton CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2015-07-20   
657-253 2 Fullerton CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2015-07-20   
657-253 3 Fullerton CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2015-07-20   
657-253 4 Fullerton CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2015-07-20   
657-253 5 Fullerton CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2014-12-13   
657-253 6 Fullerton CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2014-12-13   
657-253 7 Fullerton CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2016-07-23   
657-253 8 Fullerton CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2016-10-30   
657-253 9 Fullerton CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2014-12-13   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.