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: 635

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
920-635 A Plymouth WI MILWWI45XBX  508J CENTURYLINK COMMUNICATIONS, LLC 356      
920-635 1 Plymouth WI   6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 356   2024-12-17   
920-635 2 Plymouth WI   225C ONVOY, LLC - WI 356   2021-01-15   
920-635 3 Plymouth WI   225C ONVOY, LLC - WI 356   2021-01-15   
920-635 4 Plymouth WI   225C ONVOY, LLC - WI 356   2021-01-15   
920-635 5 Plymouth WI   225C ONVOY, LLC - WI 356   2021-01-15   
920-635 6 Plymouth WI   490J DISH WIRELESS, LLC 356   2023-05-06   
920-635 7 Plymouth WI   508J CENTURYLINK COMMUNICATIONS, LLC 356   2014-11-11   
920-635 8 Plymouth WI   624H ONVOY SPECTRUM, LLC 356   2021-06-26   
920-635 9 Plymouth WI   6529 T-MOBILE USA, INC. 356   2025-02-22   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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