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: 920

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
281-920 A Houston Suburban TX HSTNTXBUDS0  9533 SOUTHWESTERN BELL 560      
281-920 0 Houston Suburban TX HSTNTXBUDS0  9533 SOUTHWESTERN BELL 560      
281-920 1 Houston Suburban TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2020-10-10   
281-920 2 Houston Suburban TX HSTNTXBUDS0  9533 SOUTHWESTERN BELL 560      
281-920 3 Houston Suburban TX HSTNTXBUDS0  9533 SOUTHWESTERN BELL 560      
281-920 4 Houston Suburban TX HSTNTXBUDS0  9533 SOUTHWESTERN BELL 560      
281-920 5 Houston Suburban TX HSTNTXBUDS0  9533 SOUTHWESTERN BELL 560      
281-920 6 Houston Suburban TX HSTNTXBUDS0  9533 SOUTHWESTERN BELL 560      
281-920 7 Houston Suburban TX HSTNTXBUDS0  9533 SOUTHWESTERN BELL 560      
281-920 8 Houston Suburban TX HSTNTXBUDS0  9533 SOUTHWESTERN BELL 560      
281-920 9 Houston Suburban TX HSTNTXBUDS0  9533 SOUTHWESTERN BELL 560      

Last updated: Fri, 25 Jul 2025 03:21:23 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.