I found this
Before transferring a domain, make sure that your current registrar will allow the transfer, that Amazon supports the top-level domain (TLD) of your domain name, and that your DNS is configured to route traffic to your domain correctly after your domain is transferred.
When you're ready, you can transfer your domain by following the instructions at Transferring Registration for a Domain to Amazon Route 53.
Note: Some TLDs have additional requirements to transfer domains, and you might need to contact your current registrar directly to unlock a domain, get a transfer authorization code, or update the information on the domain to allow the transfer.
and for more information, you can use the below link