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: PSTNMNXARS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
507-765 A Preston MN 1445 CENTURYTEL OF MINNESOTA, INC. DBA CENTURYLINK 620      
507-765 2 Preston MN 1445 CENTURYTEL OF MINNESOTA, INC. DBA CENTURYLINK 620      
507-765 3 Preston MN 1445 CENTURYTEL OF MINNESOTA, INC. DBA CENTURYLINK 620      
507-765 4 Preston MN 1445 CENTURYTEL OF MINNESOTA, INC. DBA CENTURYLINK 620      
507-765 5 Preston MN 1445 CENTURYTEL OF MINNESOTA, INC. DBA CENTURYLINK 620      
507-765 8 Preston MN 1445 CENTURYTEL OF MINNESOTA, INC. DBA CENTURYLINK 620      
507-765 9 Preston MN 1445 CENTURYTEL OF MINNESOTA, INC. DBA CENTURYLINK 620      

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

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