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: 390

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
551-390 A Park Ridge NJ NWRKNJMDDSK  637C ONVOY, LLC - NJ 224   2024-04-21   
551-390 0 Park Ridge NJ NWRKNJMDDSK  637C ONVOY, LLC - NJ 224   2024-04-21   
551-390 1 Park Ridge NJ NWRKNJMDDSK  637C ONVOY, LLC - NJ 224   2024-04-22   
551-390 2 Park Ridge NJ NWRKNJMDDSK  637C ONVOY, LLC - NJ 224   2024-12-02   
551-390 3 Park Ridge NJ NWRKNJMDDSK  637C ONVOY, LLC - NJ 224   2024-12-02   
551-390 4 Park Ridge NJ   637C ONVOY, LLC - NJ 224   2025-04-13   
551-390 8 Park Ridge NJ NWRKNJMDDSK  637C ONVOY, LLC - NJ 224   2024-07-01   
551-390 9 Park Ridge NJ   637C ONVOY, LLC - NJ 224   2025-04-13   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

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