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: 325

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
320-325 A Clinton MN CLTNMNXARS0  1445 CENTURYTEL OF MINNESOTA, INC. DBA CENTURYLINK 626      

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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