Ef.co.th is tracked by us since April, 2011. Over the time it has been ranked as high as 144 299 in the world, while most of its traffic comes from Thailand, where it reached as high as 1 146 position. It was owned by several entities, from EF INTERNATIONAL LANGUAGE SERVICES CO. LTD. (บริษัท อีเอฟ อินเตอร์เนชั่นแนล แลงเกวจ เซอร์วิสเซส จำกัด) to EF Education First Co. Ltd. (บริษัท อีเอฟ เอ็ดดูเคชั่น เฟิร์สท์ จำกัด), it was hosted by Akamai Technologies Inc., CloudFlare Inc. and others.

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