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: 428

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
551-428 A Jersey City NJ   6391 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 224   2025-10-20   
551-428 0 Jersey City NJ   6391 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 224   2025-10-20   
551-428 9 Jersey City NJ   6391 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 224   2025-10-20   

Last updated: Mon, 15 Sep 2025 02:24:40 UTC

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