Ef.ru is tracked by us since September, 2015. Over the time it has been ranked as high as 79 649 in the world, while most of its traffic comes from Russian Federation, where it reached as high as 4 428 position. It was owned by several entities, from Signum International S.a r.l Luxembourg Luzern Branch to Signum International AG, it was hosted by Akamai Technologies Inc., CloudFlare Inc. and others.

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