Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: DLLSPAXD8MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
570-572 A Dallas PA 091H NORTH PENN LONG DISTANCE CORPORATION 232      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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