Kenken.go.jp is tracked by us since April, 2011. Over the time it has been ranked as high as 197 699 in the world, while most of its traffic comes from Japan, where it reached as high as 14 569 position. It was owned by several entities, from Independent Administrative Institution to Suzuki Hisashi of Independent Administrative Institution Building Research Institute, it was hosted by Independent Administrative Institution Building Research Institute.

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