Koo4.cn is tracked by us since April, 2011. Over the time it has been ranked as high as 311 449 in the world, while most of its traffic comes from China, where it reached as high as 24 550 position. It was owned by several entities, from 陈有余 to 黄亮亮, it was hosted by China Unicom Jiangxi province network, Tencent Cloud Computing (Beijing) Co. Ltd and others.

Koo4 has a decent Google pagerank and bad results in terms of Yandex topical citation index. We found that Koo4.cn is poorly ‘socialized’ in respect to any social network. According to Google safe browsing analytics, Koo4.cn is quite a safe domain with no visitor reviews.