JPRS (Japan Registry Services Co., Ltd.) was established in 2000 to carry out JP domain name registration and management, and to undertake the operation of the Domain Name System (DNS). As the JP domain name registry operator and a DNS expert, we provide technical information related to DNS to the community in Japan. This includes security advisories and important notifications for DNS operators. This session introduces our information dissemination activities and provides technical details on the latest topics and security incidents related to DNS in Japan, such as subdomain takeover and NS takeover. The session is primarily aimed at network operators and engineers, but it does not require detailed knowledge of the DNS.