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.

Miles City, MT

<< 1 2

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
406-944 4 BLNGMTWE6MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-944 5 BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2012-12-17   
406-944 6 BLNGMTWEBMD  771G TELEPORT COMMUNICATIONS AMERICA MT - LLC 650   2019-04-12   
406-944 7 BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2019-09-15   
406-944 8 BLNGMT93DS0  588H AIRUS, INC. - MT 650   2019-11-01   
406-944 9 BLNGMT93DS0  588H AIRUS, INC. - MT 650   2020-03-01   
406-951 A BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-951 0 BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-951 1 BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-951 2 BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-951 3 BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-951 4 BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-951 6   145J TERRA NOVA TELECOM INC. 650   2024-02-12   
406-951 9   453F ONVOY, LLC - MT 650   2024-04-14   

<< 1 2

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.