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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NPA: 406 [Rate centres in NPA 406] [Dial plan for NPA 406]

NXX: 228

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-228 A Glasgow MT GLSGMTXCDS0  2247 NEMONT TEL COOP INC 650      
406-228 2 Glasgow MT GLSGMTXCDS0  2247 NEMONT TEL COOP INC 650      
406-228 3 Glasgow MT GLSGMTXCDS0  2247 NEMONT TEL COOP INC 650      
406-228 4 Glasgow MT GLSGMTXCDS0  2247 NEMONT TEL COOP INC 650      
406-228 6 Glasgow MT GLSGMTXCDS0  2247 NEMONT TEL COOP INC 650      
406-228 7 Glasgow MT GLNDMTAJRS0  7830 MID-RIVERS TELEPHONE COOPERATIVE, INC. 650   2019-04-09   
406-228 8 Glasgow MT GLSGMTXCDS0  2247 NEMONT TEL COOP INC 650      
406-228 9 Glasgow MT GLSGMTXCDS0  2247 NEMONT TEL COOP INC 650      

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

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