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: PSDNCAXFRS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
626-306 A Sierra Madre CA 2319 FRONTIER CALIFORNIA INC. 730      
626-306 0 Sierra Madre CA 2319 FRONTIER CALIFORNIA INC. 730      
626-306 1 Sierra Madre CA 2319 FRONTIER CALIFORNIA INC. 730      
626-306 2 Sierra Madre CA 2319 FRONTIER CALIFORNIA INC. 730      
626-306 4 Sierra Madre CA 2319 FRONTIER CALIFORNIA INC. 730      
626-306 5 Sierra Madre CA 2319 FRONTIER CALIFORNIA INC. 730      
626-306 6 Sierra Madre CA 2319 FRONTIER CALIFORNIA INC. 730      
626-306 8 Sierra Madre CA 2319 FRONTIER CALIFORNIA INC. 730      
626-306 9 Sierra Madre CA 2319 FRONTIER CALIFORNIA INC. 730      

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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