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: 673

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
608-673 A Madison WI MDSNWI11XGY  515J IP HORIZON LLC 354      
608-673 0 Madison WI   6274 UNITED STATES CELLULAR - WI 354   2021-09-17   
608-673 1 Madison WI   515J IP HORIZON LLC 354   2021-06-24   
608-673 2 Madison WI   516J TON80 COMMUNICATIONS, LLC 354   2021-09-18   
608-673 3 Madison WI   225C ONVOY, LLC - WI 354   2021-07-02   
608-673 4 Madison WI   225C ONVOY, LLC - WI 354   2021-07-02   
608-673 5 Madison WI   225C ONVOY, LLC - WI 354   2021-07-02   
608-673 6 Madison WI   225C ONVOY, LLC - WI 354   2021-07-02   
608-673 7 Madison WI   6274 UNITED STATES CELLULAR - WI 354   2021-09-17   
608-673 8 Madison WI   6274 UNITED STATES CELLULAR - WI 354   2022-06-17   
608-673 9 Madison WI   6274 UNITED STATES CELLULAR - WI 354   2022-06-17   

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

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