.kr is the country code top-level domain (ccTLD) for the Republic of Korea, commonly known as South Korea. It is used for websites associated with South Korean entities, businesses, and individuals. The domain is managed by the Korea Internet & Security Agency (KISA), which oversees its registration and administration. The .kr domain can be further divided into second-level domains, such as .co.kr for commercial entities and .or.kr for organizations. This structure allows for a more organized approach to web presence in South Korea, making it easier for users to identify the nature of a website based on its domain suffix.