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: WLCMMNXWRS7

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
507-728 A Welcome MN 1367 FRONTIER COMMUNICATIONS OF MINNESOTA, INC. 620      
507-728 0 Welcome MN 1367 FRONTIER COMMUNICATIONS OF MINNESOTA, INC. 620      
507-728 1 Welcome MN 1367 FRONTIER COMMUNICATIONS OF MINNESOTA, INC. 620      
507-728 4 Welcome MN 1367 FRONTIER COMMUNICATIONS OF MINNESOTA, INC. 620      
507-728 5 Welcome MN 1367 FRONTIER COMMUNICATIONS OF MINNESOTA, INC. 620      
507-728 6 Welcome MN 1367 FRONTIER COMMUNICATIONS OF MINNESOTA, INC. 620      
507-728 7 Welcome MN 1367 FRONTIER COMMUNICATIONS OF MINNESOTA, INC. 620      
507-728 8 Welcome MN 1367 FRONTIER COMMUNICATIONS OF MINNESOTA, INC. 620      
507-728 9 Welcome MN 1367 FRONTIER COMMUNICATIONS OF MINNESOTA, INC. 620      

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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