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.

Sabina, TX

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
830-280 A SNANTXCA34Z  004F BANDWIDTH.COM CLEC, LLC - TX 566      
830-280 0 SNANTXCA34Z  004F BANDWIDTH.COM CLEC, LLC - TX 566   2020-05-21   
830-280 1 BLVRTXXA5MD  903C ONVOY, LLC - TX 566   2022-01-08   
830-280 2   145J TERRA NOVA TELECOM INC. 566   2025-08-29   
830-280 8 SNAQTXKY7MD  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 566   2021-05-27   
830-537 A SABNTXXARS0  2083 GUADALUPE VALLEY TEL. COOP., INC. 566      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.