DrillingInfo Contact Information:

• Sales and account information

• Email businessdevelopment@enverus.com

• Phone 1-800-282-4245

• Fax 512-477-1400

• Customer Service/Technical Support

• Email DrillinginfoSupport@enverus.com

• Phone 1-800-282-4245

• Billing questions

• Email billing@drillinginfo.com

• Phone 1-800-282-4245

• DI Mailing Address

• DrillingInfo, Inc.

• P.O. Box 5545, Austin Texas 78763