Seiyoken.co.jp is tracked by us since April, 2011. Over the time it has been ranked as high as 567 599 in the world, while most of its traffic comes from Japan, where it reached as high as 43 020 position. It was owned by several entities, from Seiyoken Company to Kashima Toshihiko of Seiyoken Company, it was hosted by Asia Pacific Network Information Centre, IDC Frontier Inc. and others.

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