Sdf.org is tracked by us since April, 2011. Over the time it has been ranked as high as 148 199 in the world, while most of its traffic comes from USA, where it reached as high as 37 450 position. It was owned by several entities, from SDF PUBNIX of SDF Public Access UNIX System to REDACTED FOR PRIVACY of Privacy service provided by Withheld for Privacy ehf, it was hosted by Donald A. Kassebaum Consulting Services, HopOne Internet Corporation and others.

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