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.

Buffalo, WY

<< 1 2

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
307-621 1 CSPRWYMAXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 654   2020-05-01   
307-621 2 CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2019-07-08   
307-621 3 CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2019-07-08   
307-621 4 CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2019-11-07   
307-621 5 CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2019-11-07   
307-621 6 CHYNWYMAX9X  879G TELEPORT COMMUNICATIONS AMERICA WY-LLC 654   2014-11-20   
307-621 7 CSPRWYMAXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 654   2020-05-01   
307-621 8 CHYNWYRF1MD  073H TELNYX LLC 654   2019-03-01   
307-621 9 CHYNWYRFDS0  581H AIRUS, INC. - WY 654   2017-02-02   
307-684 A BFLOWYMARS1  9636 QWEST CORPORATION 654      
307-719 A CHYNWYVACM1  013B UNION TELEPHONE COMPANY 654      

<< 1 2

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.