Local Calling Guide

Area code/prefix search

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NPA: 973 [Rate centres in NPA 973] [Dial plan for NPA 973]

NXX: 503

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
973-503 A Whippany NJ WHIPNJWHDS5  9206 VERIZON NEW JERSEY, INC. 224      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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