AppleCare Help Desk Tools: How to find the enrollment number
If you are trying to enroll or register your recently-purchased AppleCare Help Desk Tools, you will need to reference your enrollment (registration) number. (For other types of AppleCare agreements, look here.)
Inside your AppleCare Help Desk Tools box or envelope you will find a booklet that says "Getting Started" at the top. Just to the right of these words is a barcode with your AppleCare Help Desk Tools enrollment number above the barcode:
Once you have located your registration or enrollment number, you can activate your coverage here.