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: 944

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
570-944 A Lawrenceville PA DLLSPAXDHMD  793K TWC IP ENABLED SERVICES, LLC 232      
570-944 0 Lawrenceville PA   793K TWC IP ENABLED SERVICES, LLC 232      
570-944 3 Lawrenceville PA   547E ONVOY, LLC - PA 232   2021-04-14   
570-944 4 Lawrenceville PA   7315 TELEPORT COMMUNICATIONS AMERICA, LLC - PA 232   2020-11-13   
570-944 5 Lawrenceville PA   624H ONVOY SPECTRUM, LLC 232   2023-11-20   
570-944 9 Lawrenceville PA   145J TERRA NOVA TELECOM INC. 232   2025-08-01   

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

Sponsored by: ISP Telecom

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