J4.com.tw is tracked by us since May, 2012. Over the time it has been ranked as high as 117 299 in the world, while most of its traffic comes from Taiwan, where it reached as high as 1 887 position. It was owned by several entities, from 捷視網路資訊有限公司 to James Ku of 捷視網路資訊有限公司, it was hosted by CHTD Chunghwa Telecom Co.Ltd., Chunghwa Telecom Co.Ltd. and others. While was its first registrar, now it is moved to SEEDNET.

J4 has a decent Google pagerank and bad results in terms of Yandex topical citation index. We found that J4.com.tw is poorly ‘socialized’ in respect to any social network. According to Siteadvisor and Google safe browsing analytics, J4.com.tw is quite a safe domain with no visitor reviews.