Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 570 [Rate centres in NPA 570] [Dial plan for NPA 570]

NXX: 403

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
570-403 A Mountaintop PA MNTPPAMORS1  9208 VERIZON PENNSYLVANIA, INC. 232      
570-403 0 Mountaintop PA   145J TERRA NOVA TELECOM INC. 232   2025-04-09   
570-403 1 Mountaintop PA   9208 VERIZON PENNSYLVANIA, INC. 232      
570-403 2 Mountaintop PA   4007 LEVEL 3 COMMUNICATIONS, LLC - PA 232   2017-04-29   
570-403 4 Mountaintop PA   547E ONVOY, LLC - PA 232   2021-04-04   
570-403 5 Mountaintop PA   9208 VERIZON PENNSYLVANIA, INC. 232      
570-403 6 Mountaintop PA   547E ONVOY, LLC - PA 232   2021-04-04   
570-403 7 Mountaintop PA   9208 VERIZON PENNSYLVANIA, INC. 232      
570-403 8 Mountaintop PA   6921 LIMITLESS MOBILE, LLC 232   2018-01-02   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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