Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Nassau Zone 6, NY

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
516-999 9   977K YORKSTREAM COMMUNICATIONS LLC 132   2024-04-22   

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Last updated: Tue, 31 Mar 2026 13:56:49 UTC

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