Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Blair, WI

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
608-309 A BLARWIXARS0  1159 BRIGHTSPEED OF CENTRAL WISCONSIN, LLC 354      
608-309 0   1159 BRIGHTSPEED OF CENTRAL WISCONSIN, LLC 354      
608-309 7   508J CENTURYLINK COMMUNICATIONS, LLC 354   2014-12-04   
608-864 A MDSNWI11XEY  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354      
608-864 0   6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354      
608-864 1   6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354   2008-05-03   
608-864 2   225C ONVOY, LLC - WI 354   2014-08-26   
608-864 3   6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354   2013-11-01   
608-864 4   225C ONVOY, LLC - WI 354   2021-07-02   
608-864 5   5489 LEVEL 3 COMMUNICATIONS, LLC - WI 354   2006-09-25   
608-864 6   225C ONVOY, LLC - WI 354   2021-02-10   
608-864 8   145J TERRA NOVA TELECOM INC. 354   2025-08-10   
608-989 A BLARWIXARS0  1159 BRIGHTSPEED OF CENTRAL WISCONSIN, LLC 354      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.