21b.ru is tracked by us since April, 2011. Over the time it has been ranked as high as 997 879 in the world, while most of its traffic comes from Russian Federation, where it reached as high as 30 148 position. It was hosted by Scalaxy Cloud computing, OOO "Edinaa informacionnaa sistema" and others. While RUCENTER-REG-RIPN was its first registrar, now it is moved to MASTERHOST-RU.

21b has a decent Google pagerank and bad results in terms of Yandex topical citation index. We found that 21b.ru is poorly ‘socialized’ in respect to any social network. According to MyWot, Siteadvisor and Google safe browsing analytics, 21b.ru is quite a safe domain with no visitor reviews.