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.

Smithson Valley EMS, TX

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
830-228 A SMVYTXXARS0  2083 GUADALUPE VALLEY TEL. COOP., INC. 566      
830-228 0 BLVRTXXA5MD  903C ONVOY, LLC - TX 566   2023-08-26   
830-228 2 FRBGTXXALMD  5562 METROPCS, INC. 566   2021-05-14   
830-228 3 SMVYTXXARS0  2083 GUADALUPE VALLEY TEL. COOP., INC. 566      
830-228 4 SMVYTXXARS0  2083 GUADALUPE VALLEY TEL. COOP., INC. 566      
830-228 5 SMVYTXXARS0  2083 GUADALUPE VALLEY TEL. COOP., INC. 566      
830-228 7 BLVRTXXA1MD  583C TIME WARNER CBLE INFO SVC (TX) DBA TIME WARNER CBL 566   2007-07-11   
830-228 8 SNANTXCA94Z  490J DISH WIRELESS, LLC 566   2022-12-16   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.