Local Calling Guide

Area code/prefix search

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Madison, WI

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
608-999 7 MDSNWI11XAX  225C ONVOY, LLC - WI 354   2015-08-03   
608-999 8 MDSNWI11XAX  225C ONVOY, LLC - WI 354   2015-08-03   
608-999 9 MDSNWI11XAX  225C ONVOY, LLC - WI 354   2015-04-20   

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Last updated: Sat, 02 May 2026 12:20:53 UTC

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