DNS delegation of onet.co.jp updated: May 21, 2013 6:14:26 PM
We pick h.root-servers.net, one of the 13 root servers (1), and ask it about onet.co.jp and learn that jp is delegated to seven name servers (2), so we ask d.dns.jp where we learn that onet.co.jp is delegated to four name servers, including ns01c.rakuten.co.jp (3), so we ask that one and get the following answer:
Onet.co.jp is a domain controlled by four domain name servers at rakuten.co.jp having a total of eight IP numbers. Some of them are on the same IP network. Onet.co.jp has one IP number (18.104.22.168), which also has a corresponding reverse pointer.