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: STLEMNXSRS2

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
507-224 A St Leo MN 1367 FRONTIER COMMUNICATIONS OF MINNESOTA, INC. 620      
507-224 0 St Leo MN 1367 FRONTIER COMMUNICATIONS OF MINNESOTA, INC. 620      
507-224 2 St Leo MN 1367 FRONTIER COMMUNICATIONS OF MINNESOTA, INC. 620      
507-224 6 St Leo MN 1367 FRONTIER COMMUNICATIONS OF MINNESOTA, INC. 620      
507-224 7 St Leo MN 1367 FRONTIER COMMUNICATIONS OF MINNESOTA, INC. 620      
507-224 8 St Leo MN 1367 FRONTIER COMMUNICATIONS OF MINNESOTA, INC. 620      
507-224 9 St Leo MN 1367 FRONTIER COMMUNICATIONS OF MINNESOTA, INC. 620      

Last updated: Tue, 31 Mar 2026 13:56:49 UTC

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