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.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 551 [Rate centres in NPA 551] [Dial plan for NPA 551]

NXX: 388

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
551-388 A Bayonne NJ JRCYNJ65BMD  965H FRACTEL, LLC 224      
551-388 0 Bayonne NJ   637C ONVOY, LLC - NJ 224   2021-03-12   
551-388 1 Bayonne NJ   637C ONVOY, LLC - NJ 224   2021-03-12   
551-388 2 Bayonne NJ   637C ONVOY, LLC - NJ 224   2021-03-12   
551-388 3 Bayonne NJ   6623 OMNIPOINT COMMUNICATIONS, INC. - NJ 224   2021-04-19   
551-388 4 Bayonne NJ   6623 OMNIPOINT COMMUNICATIONS, INC. - NJ 224   2021-04-19   
551-388 5 Bayonne NJ   6623 OMNIPOINT COMMUNICATIONS, INC. - NJ 224   2021-04-19   
551-388 6 Bayonne NJ   6623 OMNIPOINT COMMUNICATIONS, INC. - NJ 224   2021-04-19   
551-388 7 Bayonne NJ   624H ONVOY SPECTRUM, LLC 224   2021-05-03   
551-388 8 Bayonne NJ   965H FRACTEL, LLC 224   2020-12-14   
551-388 9 Bayonne NJ   637C ONVOY, LLC - NJ 224   2021-03-12   

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.