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: 422

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
430-422 A Sherman TX SHMNTXXAQMD  622J SKYE TELECOM LLC DBA SKYETEL 552      
430-422 0 Sherman TX   490J DISH WIRELESS, LLC 552   2022-03-01   
430-422 1 Sherman TX   903C ONVOY, LLC - TX 552   2023-08-12   
430-422 2 Sherman TX   622J SKYE TELECOM LLC DBA SKYETEL 552   2021-11-06   
430-422 3 Sherman TX   073H TELNYX LLC 552   2022-02-12   
430-422 4 Sherman TX   903C ONVOY, LLC - TX 552   2023-05-22   
430-422 5 Sherman TX   6529 T-MOBILE USA, INC. 552   2022-03-25   
430-422 6 Sherman TX   6529 T-MOBILE USA, INC. 552   2022-03-25   
430-422 7 Sherman TX   6529 T-MOBILE USA, INC. 552   2022-03-25   
430-422 8 Sherman TX   903C ONVOY, LLC - TX 552   2023-08-12   
430-422 9 Sherman TX   6529 T-MOBILE USA, INC. 552   2022-03-25   

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.