Local Calling Guide

Area code/prefix search

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NPA: 631 [Rate centres in NPA 631] [Dial plan for NPA 631]

NXX: 409

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
631-409 A Nassau Zone 9 NY   515J IP HORIZON LLC 132      
631-409 8 Nassau Zone 9 NY   515J IP HORIZON LLC 132   2005-03-31   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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