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.

NPA: 608 [Rate centres in NPA 608] [Dial plan for NPA 608]

NXX: 581

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
608-581 A Baraboo WI MDSNWI11XEY  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354      
608-581 0 Baraboo WI MDSNWI11XEY  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354   2015-12-26   
608-581 1 Baraboo WI MDSNWI11XQX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 354   2016-07-11   
608-581 2 Baraboo WI MDSNWI11XQX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 354   2018-11-03   
608-581 3 Baraboo WI MDSNWI11X1X  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 354   2016-02-05   
608-581 4 Baraboo WI MDSNWI02ZMD  7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 354   2017-04-03   
608-581 5 Baraboo WI MDSNWI11XAX  225C ONVOY, LLC - WI 354   2019-08-29   
608-581 6 Baraboo WI MDSNWI11XQX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 354   2020-03-15   
608-581 7 Baraboo WI MDSNWI11XAX  225C ONVOY, LLC - WI 354   2020-08-28   
608-581 8 Baraboo WI FTBGWIDKGT0  3839 CHARTER FIBERLINK, LLC - WI 354   2017-10-29   
608-581 9 Baraboo WI MDSNWI11XIX  007F BANDWIDTH.COM CLEC, LLC - WI 354   2019-10-21   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.