Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 717 [Rate centres in NPA 717] [Dial plan for NPA 717]

NXX: 921

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
717-921 A Dauphin PA DAPHPADARS1  9208 VERIZON PENNSYLVANIA, INC. 226      
717-921 1 Dauphin PA HRBGPAHAXSX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 226   2007-03-12   
717-921 2 Dauphin PA DAPHPADARS1  9208 VERIZON PENNSYLVANIA, INC. 226      
717-921 3 Dauphin PA DAPHPADARS1  9208 VERIZON PENNSYLVANIA, INC. 226      
717-921 4 Dauphin PA HRBGPAHAX9Z  547E ONVOY, LLC - PA 226   2013-12-14   
717-921 5 Dauphin PA HRBGPAHAX9Z  547E ONVOY, LLC - PA 226   2019-09-19   
717-921 6 Dauphin PA HRBGPAHAX9Z  547E ONVOY, LLC - PA 226   2021-04-04   
717-921 7 Dauphin PA HRBGPAHAXCY  4007 LEVEL 3 COMMUNICATIONS, LLC - PA 226   2008-05-16   
717-921 8 Dauphin PA DAPHPADARS1  9208 VERIZON PENNSYLVANIA, INC. 226      
717-921 9 Dauphin PA DAPHPADARS1  9208 VERIZON PENNSYLVANIA, INC. 226      

Last updated: Sat, 02 May 2026 12:20:53 UTC

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