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From the 25th July 2006, All members need to register their "DOI username" to use the DOI Support Center.

Please Register your DOI username ONLY to submit a support ticket, read the support announcements and more. For registration instructions go to www.do-int.net/instructions.html or click on the trouble shooter.

Submit Ticket

Tickets can not be submitted without registering first - Click on "Register" to register your DOI Username in the DOI Support center.

Submit a support ticket for a prompt reply from one of the friendly DOI Support staff. Support tickets are usually answered within 72hrs, most within 24hrs.

PLEASE NOTE: Only submit 1 ticket for each subject to the most suitable department - thank you.

Lookup Ticket

You can view, modify, or check the status of your existing ticket.


First begin by troubleshooting to find a quick resolution to your issue.


A collection of the important and frequently requested files that are needed to be downloaded by the members.