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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NPA: 320 [Rate centres in NPA 320] [Dial plan for NPA 320]

NXX: 722

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
320-722 A Granite Falls MN GRFLMNXGRS0  1456 EMBARQ MINNESOTA DBA CENTURYLINK 626      
320-722 7 Granite Falls MN STCDMNTOXHX  7575 CENTURYLINK COMMUNICATIONS LLC 626   2017-06-20   
320-722 8 Granite Falls MN STCDMNTONMD  7783 BROOKS FIBER COMMUNICATIONS - MN 626   2018-08-06   

Last updated: Tue, 04 May 2021 15:04:27 UTC

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