Oklahoma Headquarters Information:
Post Office Box (preferred)
P.O. Box 32316
Oklahoma City, OK 73123
6106 NW 63rd Street
Oklahoma City, OK 73132
Office: 405.621.9006*
Fax: 405.621.9033
Texas Branch Information:
400 N. Main, #102
Grapevine, TX 76051
Office: 817.310.3133*
Fax: 817.310.0950
*Oklahoma Investigative Group, Inc. and TriCorps Security are registered with the National Do Not Call Registry. For more information, please visit their website at: www.donotcall.gov