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: SCRMCA01XEZ

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
530-387 A Shingle Springs CA 516C AT&T CORP. 726      
530-447 A Alleghany CA 516C AT&T CORP. 726      
530-578 A South Tahoe CA 516C AT&T CORP. 726      
530-847 A Alta CA 516C AT&T CORP. 726      
916-467 A Folsom CA 516C AT&T CORP. 726      
916-823 A Sacramento: Main DA CA 516C AT&T CORP. 726      

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

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