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: 281 [Rate centres in NPA 281] [Dial plan for NPA 281]

NXX: 344

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
281-344 A Richmond-Rosenberg EMS TX RSBGTXRRDS0  9533 SOUTHWESTERN BELL 560      
281-344 0 Richmond-Rosenberg EMS TX RSBGTXRRDS0  9533 SOUTHWESTERN BELL 560      
281-344 1 Richmond-Rosenberg EMS TX RSBGTXRRDS0  9533 SOUTHWESTERN BELL 560      
281-344 2 Richmond-Rosenberg EMS TX HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560   2014-04-10   
281-344 3 Richmond-Rosenberg EMS TX RSBGTXRRDS0  9533 SOUTHWESTERN BELL 560      
281-344 4 Richmond-Rosenberg EMS TX RSBGTXRRDS0  9533 SOUTHWESTERN BELL 560      
281-344 5 Richmond-Rosenberg EMS TX RSBGTXRRDS0  9533 SOUTHWESTERN BELL 560      
281-344 6 Richmond-Rosenberg EMS TX RSBGTXRRDS0  9533 SOUTHWESTERN BELL 560      
281-344 7 Richmond-Rosenberg EMS TX RSBGTXRRDS0  9533 SOUTHWESTERN BELL 560      
281-344 8 Richmond-Rosenberg EMS TX RSBGTXRRDS0  9533 SOUTHWESTERN BELL 560      
281-344 9 Richmond-Rosenberg EMS TX RSBGTXRRDS0  9533 SOUTHWESTERN BELL 560      

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.