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: 430 [Rate centres in NPA 430] [Dial plan for NPA 430]

NXX: 455

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
430-455 A Texarkana TX TXRKTXXAKMD  622J SKYE TELECOM LLC DBA SKYETEL 554      
430-455 0 Texarkana TX   624H ONVOY SPECTRUM, LLC 554   2021-11-21   
430-455 1 Texarkana TX   624H ONVOY SPECTRUM, LLC 554   2021-11-21   
430-455 2 Texarkana TX   903C ONVOY, LLC - TX 554   2021-11-21   
430-455 3 Texarkana TX   903C ONVOY, LLC - TX 554   2021-11-21   
430-455 4 Texarkana TX   903C ONVOY, LLC - TX 554   2021-11-21   
430-455 5 Texarkana TX   622J SKYE TELECOM LLC DBA SKYETEL 554   2021-11-06   
430-455 6 Texarkana TX   624H ONVOY SPECTRUM, LLC 554   2021-12-11   
430-455 7 Texarkana TX   624H ONVOY SPECTRUM, LLC 554   2021-12-11   
430-455 8 Texarkana TX   6529 T-MOBILE USA, INC. 554   2022-01-26   
430-455 9 Texarkana TX   6529 T-MOBILE USA, INC. 554   2022-01-26   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.