Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 320 [Rate centres in NPA 320] [Dial plan for NPA 320]

NXX: 375

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
320-375 A Sandstone MN MPLSMNMSAMD  5816 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 628      
320-375 0 Sandstone MN MPLSMNMSAMD  5816 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 628   2022-10-14   
320-375 1 Sandstone MN   5816 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 628   2026-07-15   
320-375 2 Sandstone MN   515J IP HORIZON LLC 628   2026-10-30   
320-375 3 Sandstone MN STPLMNMKTMD  624H ONVOY SPECTRUM, LLC 628   2024-12-19   
320-375 4 Sandstone MN   515J IP HORIZON LLC 628   2026-10-30   
320-375 5 Sandstone MN MPLSMNCDX4X  145J TERRA NOVA TELECOM INC. 628   2026-04-21   
320-375 6 Sandstone MN   515J IP HORIZON LLC 628   2026-10-30   

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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