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: 223 [Rate centres in NPA 223] [Dial plan for NPA 223]

NXX: 343

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
223-343 A Hummelstown PA HRBGPAHAXOX  624H ONVOY SPECTRUM, LLC 226      
223-343 0 Hummelstown PA   939H COMMIO, LLC 226   2022-09-25   
223-343 1 Hummelstown PA   073H TELNYX LLC 226   2022-11-03   
223-343 2 Hummelstown PA   547E ONVOY, LLC - PA 226   2021-07-27   
223-343 3 Hummelstown PA   624H ONVOY SPECTRUM, LLC 226   2021-07-26   
223-343 4 Hummelstown PA   624H ONVOY SPECTRUM, LLC 226   2022-02-03   
223-343 5 Hummelstown PA   624H ONVOY SPECTRUM, LLC 226   2022-02-03   
223-343 6 Hummelstown PA   547E ONVOY, LLC - PA 226   2023-08-09   
223-343 7 Hummelstown PA   516J TON80 COMMUNICATIONS, LLC 226   2021-07-27   
223-343 8 Hummelstown PA   547E ONVOY, LLC - PA 226   2023-08-09   
223-343 9 Hummelstown PA   547E ONVOY, LLC - PA 226   2023-08-09   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.