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.

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

NXX: 563

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-563 A Anaconda MT ANCNMTMARS1  9636 QWEST CORPORATION 648      
406-563 0 Anaconda MT HLNAMTHHPS1  008E BRESNAN BROADBAND OF MONTANA, LLC - MT [CHARTER] 648   2006-04-09   
406-563 2 Anaconda MT ANCNMTMARS1  9636 QWEST CORPORATION 648      
406-563 3 Anaconda MT ANCNMTMARS1  9636 QWEST CORPORATION 648      
406-563 4 Anaconda MT ANCNMTMARS1  9636 QWEST CORPORATION 648      
406-563 5 Anaconda MT ANCNMTMARS1  9636 QWEST CORPORATION 648      
406-563 6 Anaconda MT ANCNMTMARS1  9636 QWEST CORPORATION 648      
406-563 7 Anaconda MT ANCNMTMARS1  9636 QWEST CORPORATION 648      
406-563 8 Anaconda MT ANCNMTMARS1  9636 QWEST CORPORATION 648      
406-563 9 Anaconda MT ANCNMTMARS1  9636 QWEST CORPORATION 648      

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.