Defter.us is tracked by us since April, 2011. Over the time it has been ranked as high as 1 514 399 in the world, while most of its traffic comes from Turkey, where it reached as high as 61 930 position. It was owned by several entities, from Defter Projection Defter Projection stdfrr 65meu2 to Abdulkadir Mutlu of AKM SOFTWARE LTD, it was hosted by LeaseWeb, CloudFlare Inc. and others. While NEUSTAR INC. was its first registrar, now it is moved to .

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