Addendum.org is tracked by us since September, 2017. Over the time it has been ranked as high as 96 499 in the world, while most of its traffic comes from Austria, where it reached as high as 247 position. It was owned by several entities, from Niko Alm of Quo Vadis Veritas Redaktions GmbH to Not Disclosed of NOT DISCLOSED, it was hosted by Provider Local Registry Block, Internex GmbH and others.

Addendum has the lowest Google pagerank and bad results in terms of Yandex topical citation index. We found that Addendum.org is poorly ‘socialized’ in respect to any social network. According to MyWot and Google safe browsing analytics, Addendum.org is quite a safe domain with mostly negative visitor reviews.