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: MRTTMNXMRS2

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
320-668 A Marietta MN 1389 FARMERS MUTUAL TELEPHONE CO. 626      
605-678 A West Marietta SD 1389 FARMERS MUTUAL TELEPHONE CO. 626      

Last updated: Tue, 31 Dec 2019 02:37:20 UTC

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