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: 317

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
551-317 A Dumont NJ NWRKNJMDDSK  637C ONVOY, LLC - NJ 224      
551-317 0 Dumont NJ   637C ONVOY, LLC - NJ 224      
551-317 1 Dumont NJ JRCYNJ65DS4  264F PEERLESS NETWORK OF NEW JERSEY, LLC - NJ 224      
551-317 2 Dumont NJ NWRKNJMDDSK  637C ONVOY, LLC - NJ 224      
551-317 3 Dumont NJ HCKNNJHKX4X  624H ONVOY SPECTRUM, LLC 224      
551-317 4 Dumont NJ NWRKNJMDDSK  637C ONVOY, LLC - NJ 224      
551-317 5 Dumont NJ   637C ONVOY, LLC - NJ 224      
551-317 6 Dumont NJ NWRKNJMDDSK  637C ONVOY, LLC - NJ 224      
551-317 7 Dumont NJ NWRKNJMDDSK  637C ONVOY, LLC - NJ 224      
551-317 8 Dumont NJ NWRKNJMDDSK  637C ONVOY, LLC - NJ 224      
551-317 9 Dumont NJ NWRKNJMDDSK  637C ONVOY, LLC - NJ 224      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.