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: 434 [Rate centres in NPA 434] [Dial plan for NPA 434]

NXX: 428

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
434-428 A Clarksville VA EMPRVAXA9MD  624H ONVOY SPECTRUM, LLC 248      
434-428 0 Clarksville VA   073H TELNYX LLC 248   2021-07-04   
434-428 1 Clarksville VA   624H ONVOY SPECTRUM, LLC 248   2022-03-14   
434-428 3 Clarksville VA   138E ONVOY, LLC - VA 248   2022-03-14   
434-428 4 Clarksville VA   624H ONVOY SPECTRUM, LLC 248   2021-07-03   
434-428 5 Clarksville VA   138E ONVOY, LLC - VA 248   2021-07-23   
434-428 6 Clarksville VA   138E ONVOY, LLC - VA 248   2021-07-23   
434-428 7 Clarksville VA   624H ONVOY SPECTRUM, LLC 248   2021-12-02   
434-428 8 Clarksville VA   624H ONVOY SPECTRUM, LLC 248   2021-12-02   
434-428 9 Clarksville VA   275G PEERLESS NETWORK OF VIRGINIA, LLC - VA 248   2021-07-30   

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.