Otsuma.ac.jp is tracked by us since April, 2011. Over the time it has been ranked as high as 110 699 in the world, while most of its traffic comes from Japan, where it reached as high as 9 070 position. It was owned by several entities, from Otsuma Women's University to Ishikawa Rieko of Otsuma Women's University, it was hosted by Server Hosting Service(NTTPCCommunicationsInc.), BroadBand Tower Inc. and others.

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