Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: SMVYCAXFRSA

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
760-389 A Summit Valley CA 4420 FRONTIER CALIFORNIA INC. 730      
760-389 2 Summit Valley CA 4420 FRONTIER CALIFORNIA INC. 730      

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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