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: 661 [Rate centres in NPA 661] [Dial plan for NPA 661]

NXX: 454

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
661-454 A Delano CA BKFECANDGT0  337E BRIGHT HOUSE NTWS INFORMATION SVCS (CALIFORNIA) CA 734      
661-454 0 Delano CA   649C ONVOY, LLC - CA 734   2017-12-26   
661-454 1 Delano CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 734      
661-454 2 Delano CA   5562 METRO PCS, INC. 734   2018-04-21   
661-454 3 Delano CA   7453 U.S. TELEPACIFIC CORP. - CA 734   2007-09-03   
661-454 4 Delano CA   5562 METRO PCS, INC. 734   2018-11-04   
661-454 5 Delano CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 734   2005-07-30   
661-454 6 Delano CA   337E BRIGHT HOUSE NTWS INFORMATION SVCS (CALIFORNIA) CA 734   2013-09-01   
661-454 7 Delano CA   981E BANDWIDTH.COM CLEC, LLC - CA 734   2011-06-24   
661-454 8 Delano CA   5562 METRO PCS, INC. 734   2010-01-29   
661-454 9 Delano CA   6010 NEW CINGULAR WIRELESS PCS, LLC 734   2007-12-08   

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.