Rku.nu is tracked by us since May, 2013. Over the time it has been ranked as high as 3 185 099 in the world, while most of its traffic comes from Sweden, where it reached as high as 38 649 position. It was owned by several entities, from Torkel Nyberg registry@levonline.com to u38nun8ou2, it was hosted by RID-0000120166 and lopnet. While .NU Domain Ltd was its first registrar, now it is moved to NuNames.NU.

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