Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 608 [Rate centres in NPA 608] [Dial plan for NPA 608]

NXX: 990

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
608-990 A Baraboo WI   225C ONVOY, LLC - WI 354   2025-10-18   
608-990 3 Baraboo WI   225C ONVOY, LLC - WI 354   2025-10-18   
608-990 4 Baraboo WI   225C ONVOY, LLC - WI 354   2025-10-18   
608-990 9 Baraboo WI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 354   2025-11-21   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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