ekonf.nshu.se has one IP number , which is the same as for nshu.se, but the reverse is srv123.one.com. lvh.se, ltn.dk, oju.dk, jwr.se, juve.se and at least 100 other hosts point to the same IP. nshu.se is a domain controlled by three nameservers at b-one.nu. Two of them are on the same IP network. Incoming mail for nshu.se is handled by two mailservers at miun.se. They are on the same IP network. ekonf.nshu.se is hosted on a server in Denmark even though the hostname implies Sweden.