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: 556

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
320-556 A Bock MN BOCKMNXBRS5  1356 BENTON COOP. TEL. CO. 626      
320-556 0 Bock MN BOCKMNXBRS5  1356 BENTON COOP. TEL. CO. 626      
320-556 1 Bock MN BOCKMNXBRS5  1356 BENTON COOP. TEL. CO. 626      
320-556 2 Bock MN BOCKMNXBRS5  1356 BENTON COOP. TEL. CO. 626      
320-556 3 Bock MN BOCKMNXBRS5  1356 BENTON COOP. TEL. CO. 626      
320-556 4 Bock MN BOCKMNXBRS5  1356 BENTON COOP. TEL. CO. 626      
320-556 5 Bock MN BOCKMNXBRS5  1356 BENTON COOP. TEL. CO. 626      
320-556 6 Bock MN BOCKMNXBRS5  1356 BENTON COOP. TEL. CO. 626      
320-556 7 Bock MN BOCKMNXBRS5  1356 BENTON COOP. TEL. CO. 626      
320-556 9 Bock MN BOCKMNXBRS5  1356 BENTON COOP. TEL. CO. 626      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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