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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Arlee, MT

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
406-726 A CLTNMTXCRS1  2235 BLACKFOOT TEL. COOP., INC. 648      
406-726 1 CHRLMT010MD  986F WESTERN MONTANA COMMUNITYTEL INC. - MT 648   2013-09-29   
406-726 3 CLTNMTXCRS1  2235 BLACKFOOT TEL. COOP., INC. 648      
406-726 4 CLTNMTXCRS1  2235 BLACKFOOT TEL. COOP., INC. 648      
406-726 9 CLTNMTXCRS1  2235 BLACKFOOT TEL. COOP., INC. 648      

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

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