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: 815

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
551-815 A Ridgewood NJ NWRKNJMDDSK  637C ONVOY, LLC - NJ 224      
551-815 0 Ridgewood NJ   637C ONVOY, LLC - NJ 224   2022-09-30   
551-815 1 Ridgewood NJ   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 224   2021-08-31   
551-815 2 Ridgewood NJ   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 224   2021-05-17   
551-815 3 Ridgewood NJ   624H ONVOY SPECTRUM, LLC 224   2021-05-08   
551-815 4 Ridgewood NJ   637C ONVOY, LLC - NJ 224   2021-03-29   
551-815 5 Ridgewood NJ   637C ONVOY, LLC - NJ 224   2021-03-29   
551-815 6 Ridgewood NJ   637C ONVOY, LLC - NJ 224   2021-03-29   
551-815 7 Ridgewood NJ   637C ONVOY, LLC - NJ 224   2021-03-29   
551-815 8 Ridgewood NJ   637C ONVOY, LLC - NJ 224   2022-09-30   
551-815 9 Ridgewood NJ   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 224   2021-05-17   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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