ns3.scartech.be has one IP number , which also has a corresponding reverse pointer. ns3.scarlet.be point to the same IP. ey.be, fee.be, fsa.be, vdm.be, knt.be and at least 100 other hosts use this as a nameserver. scartech.be is a domain controlled by three nameservers at scartech.be themselves. Two of them are on the same IP network. ns3.scartech.be is hosted on a server in Netherlands even though the hostname implies Belgium.