Sentan.com is tracked by us since October, 2015. Over the time it has been ranked as high as 2 307 599 in the world, while most of its traffic comes from Japan, where it reached as high as 137 460 position. It was owned by several entities, from Sentan igakusha Corp. of Sentan igakusha Corp. to Satoshi Kujiraoka of Sentan igakusha Corp., it was hosted by OTSUKA CORPORATION, Amazon.com Inc. and others. While GMO Internet Inc. dba Onamae.com was its first registrar, now it is moved to GMO Internet Group Inc. d/b/a Onamae.com.

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