Contact Us

Our corporate headquarters and 24-7-365 Network Operations Center are located in suburban Chicago's I-88 High Tech Corridor:

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Headquarters

ExteNet Systems, Inc.
3030 Warrenville Road
Lisle, IL 60532
Phone: (630) 505-3800
Fax: (630) 577-1332 general@extenetsystems.com
NOC

Located at ExteNet Headquarters
Phone: (866) 892-5327
noc@extenetsystems.com
West

ExteNet Systems, Inc.
2000 Crow Canyon Place
Suite 210
San Ramon, CA 94583
Phone: (925) 806-0100
South

ExteNet Systems, Inc.
901 Main Street
Suite 2600
Dallas, TX 75202
Phone:(214) 231-3344

For a map with directions to our headquarters in Lisle, please click here.