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: 521

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
920-521 A Neenah WI   5489 LEVEL 3 COMMUNICATIONS, LLC - WI 350      
920-521 0 Neenah WI   5489 LEVEL 3 COMMUNICATIONS, LLC - WI 350      
920-521 1 Neenah WI   5489 LEVEL 3 COMMUNICATIONS, LLC - WI 350      
920-521 2 Neenah WI   7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 350      
920-521 3 Neenah WI   225C ONVOY, LLC - WI 350   2017-06-08   
920-521 4 Neenah WI   5489 LEVEL 3 COMMUNICATIONS, LLC - WI 350      
920-521 5 Neenah WI   829J PAETEC ITEL, LLC 350   2016-01-20   
920-521 6 Neenah WI   5489 LEVEL 3 COMMUNICATIONS, LLC - WI 350      
920-521 7 Neenah WI   225C ONVOY, LLC - WI 350   2016-05-04   
920-521 8 Neenah WI   225C ONVOY, LLC - WI 350   2016-05-04   
920-521 9 Neenah WI   5489 LEVEL 3 COMMUNICATIONS, LLC - WI 350   2016-04-28   

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

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