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.

Glenrock, WY

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
307-309 A CSPRWYMAXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 654      
307-309 0 CSPRWYMAXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 654      
307-309 1 CHYNWYMAXIX  6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY 654   2023-12-28   
307-309 2 CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2012-12-17   
307-309 3 CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2012-12-17   
307-309 4 CHYNWYMAEMD  9416 LEVEL 3 COMMUNICATIONS, LLC - WY 654   2014-07-06   
307-309 5 CHYNWYMAQMD  081F BANDWIDTH.COM CLEC, LLC - WY 654   2020-03-15   
307-309 6 CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2021-03-02   
307-309 7 CHYNWYMAXAX  508J CENTURYLINK COMMUNICATIONS, LLC 654   2015-03-18   
307-309 8 CHYNWYRF1MD  073H TELNYX LLC 654   2019-03-01   
307-309 9 SHRDWYCT0MD  268A ADVANCED COMMUNICATIONS TECHNOLOGY, INC. - WY 654   2015-01-11   
307-436 A GLRKWYMARS1  9636 QWEST CORPORATION 654      
307-554 A CHYNWYMAX2X  450F ONVOY, LLC - WY 654      
307-554 0 CHYNWYMAXIX  6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY 654   2009-05-22   
307-554 1 CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2019-05-24   
307-554 2 CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2020-12-19   
307-554 3 CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2020-12-19   
307-554 4 CHYNWYMAXIX  6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY 654   2013-06-11   
307-554 5 CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2019-09-07   
307-554 6 CSPRWYMAXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 654   2010-11-13   
307-554 7 CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2007-03-09   
307-554 8 CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2012-01-13   
307-554 9 CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2021-03-02   
307-741 A CHYNWYVACM1  013B UNION TELEPHONE COMPANY 654      

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.