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: SBLYIAAC1MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
507-392 A North Rock Rapids MN 1109 HEARTLAND TELECO OF IA DBA PREMIER COMMUNICATIONS 630      
605-547 A West Hawarden SD 1109 HEARTLAND TELECO OF IA DBA PREMIER COMMUNICATIONS 630      
605-565 A West Akron SD 1109 HEARTLAND TELECO OF IA DBA PREMIER COMMUNICATIONS 630      
712-278 A Ireton IA 1109 HEARTLAND TELECO OF IA DBA PREMIER COMMUNICATIONS 630      
712-439 A Hull IA 1109 HEARTLAND TELECO OF IA DBA PREMIER COMMUNICATIONS 630      
712-472 A Rock Rapids IA 1109 HEARTLAND TELECO OF IA DBA PREMIER COMMUNICATIONS 630      
712-552 A Hawarden IA 1109 HEARTLAND TELECO OF IA DBA PREMIER COMMUNICATIONS 630      
712-568 A Akron IA 1109 HEARTLAND TELECO OF IA DBA PREMIER COMMUNICATIONS 630      
712-725 A Boyden IA 1109 HEARTLAND TELECO OF IA DBA PREMIER COMMUNICATIONS 630      
712-726 A Doon IA 1109 HEARTLAND TELECO OF IA DBA PREMIER COMMUNICATIONS 630      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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