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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Switch: CHNDMNXCRS6

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
507-677 A Chandler MN 1367 FRONTIER COMMUNICATIONS OF MINNESOTA, INC. 620      
507-677 0 Chandler MN 1367 FRONTIER COMMUNICATIONS OF MINNESOTA, INC. 620      
507-677 1 Chandler MN 1367 FRONTIER COMMUNICATIONS OF MINNESOTA, INC. 620      
507-677 2 Chandler MN 1367 FRONTIER COMMUNICATIONS OF MINNESOTA, INC. 620      
507-677 9 Chandler MN 1367 FRONTIER COMMUNICATIONS OF MINNESOTA, INC. 620      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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