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: 830 [Rate centres in NPA 830] [Dial plan for NPA 830]

NXX: 223

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
830-223 A Hancock EMS TX HNCCTXXARS0  2083 GUADALUPE VALLEY TEL. COOP., INC. 566      
830-223 0 Hancock EMS TX   903C ONVOY, LLC - TX 566   2023-10-29   
830-223 1 Hancock EMS TX   903C ONVOY, LLC - TX 566   2023-10-29   
830-223 2 Hancock EMS TX   903C ONVOY, LLC - TX 566   2022-01-08   
830-223 3 Hancock EMS TX   516J TON80 COMMUNICATIONS, LLC 566   2021-09-08   
830-223 4 Hancock EMS TX   903C ONVOY, LLC - TX 566   2022-12-21   
830-223 5 Hancock EMS TX   2083 GUADALUPE VALLEY TEL. COOP., INC. 566      
830-223 7 Hancock EMS TX   793K TWC IP ENABLED SERVICES, LLC 566   2007-07-11   
830-223 8 Hancock EMS TX   903C ONVOY, LLC - TX 566   2022-10-24   

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.