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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OCN: 068H NORTHLAND COMMUNICATIONS, INC. - IA

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
641-450 A Mason City IA MSCYIA75JMD  632      
641-450 0 Mason City IA MSCYIA75JMD  632   2013-07-15   
641-450 5 Mason City IA MSCYIA75JMD  632   2017-10-30   
641-513 8 Mason City IA   632   2024-05-04   
641-924 2 Garner IA MSCYIA75JMD  632   2014-12-27   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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