HI i haven't registered any of my domains the vendor which you specified here ..However i have registered 6 of my business domains with the vendor
XnYnZ.com along with free private whois .Here they are rendering free private registration service for 5 or more domains registered with them ....After registering my domain i did whois search for it using sites like
WhoisXY.com to check that whether the details are hid or not ....