We pick c.root-servers.net, one of the 13 root servers (1), and ask it about hosteg.de and learn that de is delegated to six name servers (2), so we ask f.nic.de where we learn that hosteg.de is delegated to three name servers, including name2.hosteg.de (3), so we ask that one and get the following answer:
Hosteg.de is a domain controlled by five domain name servers at hosteg.de themselves having a total of nine IP numbers. All nine of them are on different IP networks. Incoming mail for hosteg.de is handled by three mail servers also at hosteg.de having a total of 31 IP numbers. There are three duplicated IP numbers. Some of them are on the same IP network. Hosteg.de has two IP numbers (184.108.40.206, 220.127.116.11). Both are on the same IP network.