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: 398

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
551-398 A Westwood NJ NWRKNJMDDSK  637C ONVOY, LLC - NJ 224   2024-09-21   
551-398 0 Westwood NJ NWRKNJMDDSK  637C ONVOY, LLC - NJ 224   2024-09-21   
551-398 1 Westwood NJ NWRKNJMDDSK  637C ONVOY, LLC - NJ 224   2024-11-07   
551-398 2 Westwood NJ   637C ONVOY, LLC - NJ 224   2025-05-10   
551-398 3 Westwood NJ   637C ONVOY, LLC - NJ 224   2025-05-10   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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