To create an Apple Developer Organization account, you will need to have a D-U-N-S number. Dun & Bradstreet is responsible for providing a free D-U-N-S number to businesses so that they can be verified by other companies. You can find out more about D-U-N-S numbers and how they can be used for your Apple Developer Account here.
1. Visit http://developer.apple.com/enroll/duns-lookup/ and log in with your Apple ID account.
2. Choose your region and fill in your business' details. Then, click on Continue.
3. If your organization already has a D-U-N-S number, you can proceed to confirm the information for it to be sent to your e-mail.
If you don't have a D-U-N-S number, you will need to request one. To do so, check the box, allowing Apple to send the information to D-U-N-S, and click on Submit.
After requesting a D-U-N-S Number, allow up to 5 business days to receive your number from D&B.
Note: As part of their verification process, a D&B representative may contact you directly for more information (such as your business type or the number of employees), so make sure to have your business registration documents ready.