Summary
dns2.tu.se has two IP numbers. They are on the same IP network.
dns.tu.se cnames to this hostname.
dynga.se,
felia.biz,
swania.se,
waeles.se,
lifli.biz and at least 58 other hosts point to the same IP.
tu.se is delegated to two nameservers, however two extra nameservers are listed in the zone. All nameservers are at
loopia.se. All of them are on the same IP network. Incoming mail for
tu.se is handled by two mailservers at
softcom.dk. They are on different IP networks.
tu.se has one IP number.
dns2.tu.se is hosted on two servers in Sweden.