What is a domain transfer?
A domain transfer refers to the process of changing the designated registrar of a domain name. Once a transfer has been made, the new registrar will maintain all relevant information regarding the domain and the registrant.
Domain names may be transferred only if they have been registered with the previous registrar for 60 days or more.

How to transfer domain name to us safely and easily?

Don’t just look at features and services, but how they’re priced and provided.
Not all domain registrars are the same. From the features they provide to how reliable they are, there’s a lot more to registrars than just selling you names.
Once you’ve chosen a registrar, the good news is that you’re not locked into using them forever. You can always make a switch.
With so many registrars out there, it’s very easy to transfer your domain. While every registrar’s transfer process is different, they all have some useful features in common to ensure that transfers are safe and secure:
Transfer locks prevent your domain from being transferred without your knowledge.
Authorization codes help make sure you have permission to transfer your domain from one registrar to another. They are sometimes called “EPP codes” or “Transfer codes.”
Confirmation emails make sure you are transferring your domain to the right person. You can’t make the transfer without verifying your identity.
The technical details involved in a transfer can seem overwhelming, but many registrars have excellent online help articles that can walk you through the process.
https://domains.google/learn/why-and-how-to-transfer-your-domain.html#/