.co.jp is a country code top-level domain (ccTLD) specifically designated for businesses and organizations in Japan. It is managed by the Japan Registry Services (JPRS) and is primarily used by companies that are registered in Japan, making it a trusted domain for local online presence. To register a .co.jp domain, applicants must provide proof of their business registration in Japan. This ensures that the domain is used by legitimate entities, helping users identify credible websites. The .co.jp domain is popular among Japanese companies looking to establish their brand and connect with customers in the local market.