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.

Switch: SHOKCA02DS2

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
661-350 A Palmdale: Palmdale DA CA 7421 AT&T LOCAL 730      
661-350 9 Palmdale: Palmdale DA CA 7421 AT&T LOCAL 730      
661-360 A Santa Clarita: Saugus Canyon Country DA CA 7421 AT&T LOCAL 730      
661-360 0 Santa Clarita: Saugus Canyon Country DA CA 7421 AT&T LOCAL 730      
661-678 A Santa Clarita: Newhall-Castaic DA CA 7421 AT&T LOCAL 730      
661-678 2 Santa Clarita: Newhall-Castaic DA CA 7421 AT&T LOCAL 730      
661-678 4 Santa Clarita: Newhall-Castaic DA CA 7421 AT&T LOCAL 730      
805-426 A Simi Valley CA 7421 AT&T LOCAL 730      
805-426 2 Simi Valley CA 7421 AT&T LOCAL 730      
805-628 A Ventura Central CA 7421 AT&T LOCAL 730      
805-628 1 Ventura Central CA 7421 AT&T LOCAL 730   2008-10-05   
818-263 A Van Nuys CA 7421 AT&T LOCAL 730      
818-263 8 Van Nuys CA 7421 AT&T LOCAL 730      
818-271 5 San Fernando: Granada Hills DA CA 7421 AT&T LOCAL 730   2002-08-21   
818-336 3 San Fernando: San Fernando DA CA 7421 AT&T LOCAL 730   2003-02-09   
818-477 A Northridge CA 7421 AT&T LOCAL 730      
818-477 9 Northridge CA 7421 AT&T LOCAL 730      
818-661 5 Agoura CA 7421 AT&T LOCAL 730   2001-10-10   
818-936 A Canoga Park CA 7421 AT&T LOCAL 730      
818-936 1 Canoga Park CA 7421 AT&T LOCAL 730      
818-936 2 Canoga Park CA 7421 AT&T LOCAL 730      
818-936 3 Canoga Park CA 7421 AT&T LOCAL 730      
818-936 7 Canoga Park CA 7421 AT&T LOCAL 730      

Last updated: Sun, 28 Feb 2021 19:06:05 UTC

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