Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 835 [Rate centres in NPA 835] [Dial plan for NPA 835]

NXX: 277

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
835-277 A Philadelphia Suburban Zone 23 PA   547E ONVOY, LLC - PA 228   2025-12-26   
835-277 0 Philadelphia Suburban Zone 23 PA   547E ONVOY, LLC - PA 228   2025-12-26   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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