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.
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Switch: MLCYMTBVDS0

Remotes:

Switch Switch name Switch type
LWTWMTAQRS1  LEWISTOWN  5RS 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
406-234 A Miles City MT 7830 MID-RIVERS TELEPHONE COOPERATIVE, INC. 650      
406-874 A Miles City MT 7830 MID-RIVERS TELEPHONE COOPERATIVE, INC. 650      
406-874 3 Miles City MT 7830 MID-RIVERS TELEPHONE COOPERATIVE, INC. 650      
406-874 5 Miles City MT 7830 MID-RIVERS TELEPHONE COOPERATIVE, INC. 650      
406-874 6 Miles City MT 7830 MID-RIVERS TELEPHONE COOPERATIVE, INC. 650      
406-874 7 Miles City MT 7830 MID-RIVERS TELEPHONE COOPERATIVE, INC. 650      
406-874 8 Miles City MT 7830 MID-RIVERS TELEPHONE COOPERATIVE, INC. 650      
406-874 9 Miles City MT 7830 MID-RIVERS TELEPHONE COOPERATIVE, INC. 650      

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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