Local Calling Guide

Area code/prefix search

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

NXX: 733

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
631-733 A Brentwood NY SCDLNYAN1MD  2612 SCARSDALE SECURITY SYSTEMS, INC. 132      

Last updated: Sat, 15 Nov 2025 03:38:44 UTC

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