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.
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Switch: SCRMCA01XFZ

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
530-422 A Colfax: Weimar DA CA 388E CEBRIDGE TELECOM CA, LLC DBA SUDDENLINK COMMS - CA 726      
530-446 A Grass Valley: Main DA CA 388E CEBRIDGE TELECOM CA, LLC DBA SUDDENLINK COMMS - CA 726      
530-489 A Homewood CA 388E CEBRIDGE TELECOM CA, LLC DBA SUDDENLINK COMMS - CA 726      
530-492 A Auburn: Main DA CA 388E CEBRIDGE TELECOM CA, LLC DBA SUDDENLINK COMMS - CA 726      
530-536 A Truckee CA 388E CEBRIDGE TELECOM CA, LLC DBA SUDDENLINK COMMS - CA 726      
530-728 A Grass Valley: South DA CA 388E CEBRIDGE TELECOM CA, LLC DBA SUDDENLINK COMMS - CA 726      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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