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.

Richards, TX

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
936-851 A RCHRTXXARS0  2084 BRIGHTSPEED OF EASTERN TEXAS, INC. 560      
936-851 0 RCHRTXXARS0  2084 BRIGHTSPEED OF EASTERN TEXAS, INC. 560      
936-851 1 HSTNTXYADS5  903C ONVOY, LLC - TX 560   2013-01-11   
936-851 2 RCHRTXXARS0  2084 BRIGHTSPEED OF EASTERN TEXAS, INC. 560      
936-851 4 HSTNTXYADS5  903C ONVOY, LLC - TX 560   2021-03-18   
936-851 5 HSTNTXYAHMD  073H TELNYX LLC 560   2021-04-08   
936-851 6 HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2015-05-21   
936-851 7 HSTNTXYADS5  903C ONVOY, LLC - TX 560   2011-11-18   
936-851 8 HSTNTXMOX6X  624H ONVOY SPECTRUM, LLC 560   2025-01-03   
936-851 9 HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560   2020-06-15   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.