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: RCVYIAACRS4

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
712-476 A Rock Valley IA 1109 HEARTLAND TELECO OF IA DBA PREMIER COMMUNICATIONS 630      
712-476 1 Rock Valley IA 1109 HEARTLAND TELECO OF IA DBA PREMIER COMMUNICATIONS 630      
712-476 2 Rock Valley IA 1109 HEARTLAND TELECO OF IA DBA PREMIER COMMUNICATIONS 630      
712-476 3 Rock Valley IA 1109 HEARTLAND TELECO OF IA DBA PREMIER COMMUNICATIONS 630      
712-476 4 Rock Valley IA 1109 HEARTLAND TELECO OF IA DBA PREMIER COMMUNICATIONS 630      
712-476 5 Rock Valley IA 1109 HEARTLAND TELECO OF IA DBA PREMIER COMMUNICATIONS 630      
712-476 6 Rock Valley IA 1109 HEARTLAND TELECO OF IA DBA PREMIER COMMUNICATIONS 630      
712-476 7 Rock Valley IA 1109 HEARTLAND TELECO OF IA DBA PREMIER COMMUNICATIONS 630      
712-476 8 Rock Valley IA 1109 HEARTLAND TELECO OF IA DBA PREMIER COMMUNICATIONS 630      
712-476 9 Rock Valley IA 1109 HEARTLAND TELECO OF IA DBA PREMIER COMMUNICATIONS 630      

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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