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: 936 [Rate centres in NPA 936] [Dial plan for NPA 936]

NXX: 937

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
936-937 A Hilltop Lakes TX HSTNTXYADS5  903C ONVOY, LLC - TX 560      
936-937 0 Hilltop Lakes TX HSTNTXYAHMD  073H TELNYX LLC 560   2021-03-19   
936-937 2 Hilltop Lakes TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2020-08-22   
936-937 3 Hilltop Lakes TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2020-08-22   
936-937 4 Hilltop Lakes TX HSTNTXJAXGY  516J TON80 COMMUNICATIONS, LLC 560   2021-07-25   
936-937 5 Hilltop Lakes TX HSTNTXMOX6X  624H ONVOY SPECTRUM, LLC 560   2021-11-23   
936-937 6 Hilltop Lakes TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2019-08-14   
936-937 7 Hilltop Lakes TX HSTNTXMOX6X  624H ONVOY SPECTRUM, LLC 560   2021-07-09   
936-937 9 Hilltop Lakes TX HSTNTXMOX6X  624H ONVOY SPECTRUM, LLC 560   2021-11-23   

Last updated: Fri, 01 Dec 2023 03:58:46 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.