We pick j.root-servers.net, one of the 13 root servers (1), and ask it about 265.com.tw and learn that tw is delegated to ten name servers (2), so we ask sec4.apnic.net where we learn that com.tw is delegated to seven name servers, including d.twnic.net.tw (3), so we ask that one and learn that 265.com.tw is delegated to two name servers (4), so we ask ns13.xincache.com and get the following answer:
265.com.tw is a domain controlled by four domain name servers at xincache.com having a total of two IP numbers. There are six duplicated IP numbers. Both are on the same IP network. 265.com.tw has one IP number (124.173.106.93).
Three percent of them use the four name servers ns13, ns14, ns19 and ns20.xincache.com together, hereafter referred to as "name server group 4", (example: guoduf.com and cdmjw.com ). Worth noting is that all of the domains that use name server group 4 use the primary name server ns13.xincache.com.
The four name servers ns11, ns12, ns13 and ns14.xincache.com together
There are more than a thousands domains that use name server group 1.
Three quarter of them use the primary name server ns13.xincache.com. Worth noting is that at least one of the domains that use the primary name server ns13.xincache.com use name server group 1.
The four name servers ns.xinnet.cn, ns11.xincache.com, ns12.xincache.com and ns.xinnetdns.com toget…