Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
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NPA: 551 [Rate centres in NPA 551] [Dial plan for NPA 551]

NXX: 417

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
551-417 A Jersey City NJ   637C ONVOY, LLC - NJ 224   2025-03-30   
551-417 0 Jersey City NJ   637C ONVOY, LLC - NJ 224   2025-03-30   
551-417 1 Jersey City NJ   637C ONVOY, LLC - NJ 224   2025-04-13   
551-417 8 Jersey City NJ   637C ONVOY, LLC - NJ 224   2025-04-13   
551-417 9 Jersey City NJ   425J CSC WIRELESS, LLC 224   2025-05-02   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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