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.

Switch: CWAGMTXCDS0

Remotes:

Switch Switch name Switch type
FTSMMTXCRS1  FORT SMITH  DMT 
LDGSMTXCRS1  LODGE GRASS  DMT 
WYOLMTXCRS1  WYOLA  DMT 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
406-638 A Hardin MT 2250 PROJECT TEL. CO., INC. 650      
406-638 2 Hardin MT 2250 PROJECT TEL. CO., INC. 650      
406-638 3 Hardin MT 2250 PROJECT TEL. CO., INC. 650      
406-638 4 Hardin MT 2250 PROJECT TEL. CO., INC. 650      
406-638 7 Hardin MT 2250 PROJECT TEL. CO., INC. 650      
406-638 9 Hardin MT 2250 PROJECT TEL. CO., INC. 650      

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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