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.

Terry (Mid-Rivers), MT

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
406-635 A TRRYMTAARS0  2246 MID-RIVERS TELEPHONE COOPERATIVE, INC. 650      
406-635 0   073H TELNYX LLC 650   2018-07-25   
406-635 1   588H AIRUS, INC. - MT 650   2021-02-18   
406-635 4   2246 MID-RIVERS TELEPHONE COOPERATIVE, INC. 650      
406-635 5   2246 MID-RIVERS TELEPHONE COOPERATIVE, INC. 650      
406-635 6   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2018-12-17   
406-635 7   453F ONVOY, LLC MT 650   2021-03-07   
406-635 8   588H AIRUS, INC. - MT 650   2018-03-02   
406-635 9   2246 MID-RIVERS TELEPHONE COOPERATIVE, INC. 650      

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

Sponsored by: VoiceMeUp - Corporate VoIP Services

Like this site? We accept donations via PayPal.