Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 920 [Rate centres in NPA 920] [Dial plan for NPA 920]

NXX: 645

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
920-645 A Manitowoc WI MILWWIDK6MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 356      
920-645 0 Manitowoc WI   5489 LEVEL 3 COMMUNICATIONS, LLC - WI 356      
920-645 1 Manitowoc WI   6529 T-MOBILE USA, INC. 356   2006-06-06   
920-645 2 Manitowoc WI   5489 LEVEL 3 COMMUNICATIONS, LLC - WI 356   2011-01-03   
920-645 3 Manitowoc WI   6529 T-MOBILE USA, INC. 356   2007-08-20   
920-645 4 Manitowoc WI   6529 T-MOBILE USA, INC. 356   2010-04-01   
920-645 5 Manitowoc WI   6529 T-MOBILE USA, INC. 356   2006-09-18   
920-645 6 Manitowoc WI   829J PAETEC ITEL, LLC 356   2008-04-04   
920-645 7 Manitowoc WI   6529 T-MOBILE USA, INC. 356   2011-04-21   
920-645 8 Manitowoc WI   6529 T-MOBILE USA, INC. 356   2008-08-21   
920-645 9 Manitowoc WI   6529 T-MOBILE USA, INC. 356   2010-01-07   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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