Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: CIBLAZXCRL0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
928-857 A Cibola AZ 4419 FRONTIER COMMUNICATIONS OF THE SOUTHWEST INC. - AZ 730      
928-857 3 Cibola AZ 4419 FRONTIER COMMUNICATIONS OF THE SOUTHWEST INC. - AZ 730      

Last updated: Tue, 31 Mar 2026 13:56:49 UTC

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