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: HAYSMTXCRS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
406-673 A Hays MT 2257 TRIANGLE TEL. COOP. ASSN., INC. 648      
406-673 0 Hays MT 2257 TRIANGLE TEL. COOP. ASSN., INC. 648      
406-673 1 Hays MT 2257 TRIANGLE TEL. COOP. ASSN., INC. 648      
406-673 2 Hays MT 2257 TRIANGLE TEL. COOP. ASSN., INC. 648      
406-673 3 Hays MT 2257 TRIANGLE TEL. COOP. ASSN., INC. 648      
406-673 4 Hays MT 2257 TRIANGLE TEL. COOP. ASSN., INC. 648      
406-673 5 Hays MT 2257 TRIANGLE TEL. COOP. ASSN., INC. 648      
406-673 6 Hays MT 2257 TRIANGLE TEL. COOP. ASSN., INC. 648      
406-673 7 Hays MT 2257 TRIANGLE TEL. COOP. ASSN., INC. 648      
406-673 8 Hays MT 2257 TRIANGLE TEL. COOP. ASSN., INC. 648      
406-673 9 Hays MT 2257 TRIANGLE TEL. COOP. ASSN., INC. 648      

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

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