Summary
ns2.rug.nl has one IP number , which also has a corresponding reverse pointer.
master.rug.nl point to the same IP.
rug.nl,
ai.rug.nl,
id.rug.nl,
ub.rug.nl,
rc.rug.nl and at least 72 other hosts use this as a nameserver.
rug.nl is a domain controlled by three nameservers. Two of them are on the same IP network. Incoming mail for
rug.nl is handled by two mailservers having a total of three IP numbers. Two mailservers have the same IP number. Two of them are on the same IP network.
ns2.rug.nl is hosted on a server in Netherlands.