Top1.us is tracked by us since April, 2011. Over the time it has been ranked as high as 758 699 in the world, while most of its traffic comes from Vietnam, where it reached as high as 17 272 position. It was owned by several entities, from Duong Nguyen Thuy of DinaNET to James Simpson, it was hosted by OVH Singapore PTE. LTD, CloudFlare Inc. and others. While NEUSTAR INC. was its first registrar, now it is moved to .

Top1 has the lowest Google pagerank and bad results in terms of Yandex topical citation index. We found that Top1.us is poorly ‘socialized’ in respect to any social network. According to Siteadvisor and Google safe browsing analytics, Top1.us is quite a safe domain with no visitor reviews.