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: 742

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
320-742 A Sandstone MN MPLSMNCDXCX  516J TON80 COMMUNICATIONS, LLC 628      
320-742 6 Sandstone MN MPLSMNCDXCX  516J TON80 COMMUNICATIONS, LLC 628   2022-04-23   
320-742 9 Sandstone MN MPLSMNCDDSF  107F PEERLESS NETWORK OF MINNESOTA, LLC - MN 628   2023-10-28   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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