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.

Circle, MT

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
406-485 A CRCLMTXCRS1  2246 MID-RIVERS TEL. COOP., INC. 650      
406-485 1 CRCLMTXCRS1  2246 MID-RIVERS TEL. COOP., INC. 650      
406-485 2 CRCLMTXCRS1  2246 MID-RIVERS TEL. COOP., INC. 650      
406-485 3 CRCLMTXCRS1  2246 MID-RIVERS TEL. COOP., INC. 650      
406-485 5 BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2018-12-17   
406-485 7 CRCLMTXCRS1  2246 MID-RIVERS TEL. COOP., INC. 650      
406-485 9 CRCLMTXCRS1  2246 MID-RIVERS TEL. COOP., INC. 650      
406-974 A BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-974 0 BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-974 2 BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-974 3 BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-974 6 BLNGMTWE6MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2019-10-10   
406-974 9 BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.