also note that some resellers can hide block some tracing so what i use sometimes was tracer route. the DNS only shows where the access of the address or domain will go after being redirected to the DNS server. the nameservers may also be pointing to a new DNS and this DNS may also be pointing to some DNS as well..

i have not tried yet the provided link but i am an advance user of DNSstuff, that website provides all the tools that you need to trace something..

In addition, I once also was looking where several websites were hosted, because I noticed someone was stealing my content, was making the same html copies of my website and putting them somewhere else, on other hosts and was adding his/her own ads.. I was finding these sites through google and was contacting his hosts, at first it was easy as it was always a subdomain, then he used uni.cc so I still traced the host and after that he even become more smart, due to he got hosted at Chinese website and I didn't understand how to contact the web host owner and gave up..