Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 551 [Rate centres in NPA 551] [Dial plan for NPA 551]

NXX: 408

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
551-408 A Dumont NJ NWRKNJMDDSK  637C ONVOY, LLC - NJ 224   2024-12-29   
551-408 0 Dumont NJ NWRKNJMDDSK  637C ONVOY, LLC - NJ 224   2024-12-29   
551-408 1 Dumont NJ NWRKNJMDDSK  637C ONVOY, LLC - NJ 224   2024-12-30   
551-408 4 Dumont NJ   490J DISH WIRELESS, LLC 224   2025-09-29   
551-408 5 Dumont NJ   490J DISH WIRELESS, LLC 224   2025-12-29   
551-408 9 Dumont NJ   118F BANDWIDTH.COM CLEC, LLC - NJ 224   2025-04-10   

Last updated: Fri, 25 Jul 2025 03:21:23 UTC

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