You can easily move your domain to another Alantron user online. Please follow these steps:
1- Go to Change Domain Owner page or https://www.alantron.com/turkce/hesap-yonetimi/login_domain_d.to?d=change_owner page
2- Enter the username of new domain owner and complete the step.
3- Both the current and new domain owner will receive an email from Alantron. Click the link inside the mail and complete the transition.