10年契約した状態で移管したら1年分追加されずに消えるし決まってそうと思って確認したけど "typically" としか言ってない
When you register a domain name, you're able to use it for the period of time you registered it for, which is typically between one to ten years.
FAQs for Registrants: Domain Name Renewals and Expiration - ICANN https://www.icann.org/resources/pages/domain-name-renewal-expiration-faqs-2018-12-07-en