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: 235 [Rate centres in NPA 235] [Dial plan for NPA 235]

NXX: 777

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
235-777 A Fisk MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2024-11-14   
235-777 0 Fisk MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2024-11-14   
235-777 1 Fisk MO STLSMO05XMX  624H ONVOY SPECTRUM, LLC 520   2025-01-11   
235-777 7 Fisk MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2024-11-14   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.