A person who has signed up for something, like a class or event.
The registrant got a note about the event they signed up for.
등록자는 등록한 행사에 대한 메모를 받았습니다.
The owner of a domain name who has the right to use it.
The registrant must keep their domain name active by renewing it.
등록자는 도메인 이름을 갱신하여 활성화를 유지해야 합니다.