If you want to know who is the owner of a specific internet-domain is then Whois is the right tool for you. The following domains can be directly shown by Onlineeye, all others with the "Web Search"
.biz whois.nic.biz
.com whois.internic.net
.coop whois.nic.coop
.info whois.nic.info
.name whois.nic.name
.net whois.internic.net
.org whois.internic.net
.gov whois.nic.gov
.edu whois.networksolutions.com
.mil rs.internic.net
.int whois.iana.org.ac whois.nic.ac
.ae whois.uaenic.ae
.at whois.ripe.net
.au whois.aunic.net
.be whois.dns.be
.bg whois.ripe.net
.br whois.registro.br
.bz whois.belizenic.bz
.ca whois.cira.ca
.cc whois.nic.cc
.ch whois.nic.ch
.cl whois.nic.cl
.cn whois.cnnic.net.cn
.cz whois.nic.cz
.de whois.nic.de
.fr whois.nic.fr
.hu whois.nic.hu
.ie whois.domainregistry.ie
.il whois.isoc.org.il
.in whois.ncst.ernet.in
.ir whois.nic.ir
.is whois.isnic.is
.it whois.nic.it
.je whois.nic.je
.jp whois.nic.ad.jp
.li whois.nic.ch
.lu whois.dns.lu
.mc whois.ripe.net
.to whois.tonic.to
.tv whois.tv
.ru whois.ripn.net
.nl whois.domain-registry.nl