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: 307 [Rate centres in NPA 307] [Dial plan for NPA 307]

NXX: 735

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
307-735 A Glendo WY GLNDWYMARS1  9636 QWEST CORPORATION 654      
307-735 0 Glendo WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2012-12-17   
307-735 1 Glendo WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2016-12-24   
307-735 3 Glendo WY CHYNWYMAQMD  081F BANDWIDTH.COM CLEC, LLC - WY 654   2011-12-24   
307-735 4 Glendo WY GLNDWYMARS1  9636 QWEST CORPORATION 654      
307-735 5 Glendo WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2019-09-07   
307-735 6 Glendo WY CHYNWYMAXAX  508J CENTURYLINK COMMUNICATIONS, LLC 654   2015-03-18   
307-735 7 Glendo WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2007-03-23   
307-735 8 Glendo WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2012-01-30   
307-735 9 Glendo WY CHYNWYRF1MD  073H TELNYX LLC 654   2019-03-01   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.