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: PTERMNXPRS2

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
507-296 A Porter MN 1367 FRONTIER COMMUNICATIONS OF MINNESOTA, INC. 620      
507-296 0 Porter MN 1367 FRONTIER COMMUNICATIONS OF MINNESOTA, INC. 620      
507-296 1 Porter MN 1367 FRONTIER COMMUNICATIONS OF MINNESOTA, INC. 620      
507-296 2 Porter MN 1367 FRONTIER COMMUNICATIONS OF MINNESOTA, INC. 620      
507-296 3 Porter MN 1367 FRONTIER COMMUNICATIONS OF MINNESOTA, INC. 620      
507-296 4 Porter MN 1367 FRONTIER COMMUNICATIONS OF MINNESOTA, INC. 620      
507-296 8 Porter MN 1367 FRONTIER COMMUNICATIONS OF MINNESOTA, INC. 620      
507-296 9 Porter MN 1367 FRONTIER COMMUNICATIONS OF MINNESOTA, INC. 620      

Last updated: Fri, 10 Jul 2026 02:55:48 UTC

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