Amazon Route 53
Developer Guide (API Version 2013-04-01)

Transferring my domain to Amazon Route 53 failed

When you transfer domain registration to Amazon Route 53, we're required by ICANN, the governing body for domain registration, to get authorization for the transfer from the registrant contact for the domain. To get authorization, we send you an email that contains a link. You have between 5 and 15 days to click the link, depending on the top-level domain. After that time, the link stops working.

If you don't click the link in the email in the allotted amount of time, ICANN requires that we cancel the transfer. For information about how to resend the authorization email to the registrant contact, see Resending Authorization and Confirmation Emails.