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.

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: Wed, 04 Mar 2026 03:00:52 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.