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.

Marks, MS

<< 1 2

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
662-619 4 JCSNMSCPXMZ  719E ONVOY, LLC - MS 482   2021-02-23   
662-619 5 JCSNMSCPXMZ  719E ONVOY, LLC - MS 482   2021-02-23   

<< 1 2

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.