Summary
ns3.surfnet.nl has one IP number , which also has a corresponding reverse pointer.
sn.forfun.net point to the same IP.
l1.nl,
sec.nl,
icn.nl,
w3c.nl,
knmi.nl and at least 100 other hosts use this as a nameserver.
surfnet.nl is a domain controlled by four nameservers at
ja.net having a total of five IP numbers. Two of them are on the same IP network. Incoming mail for
surfnet.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.
ns3.surfnet.nl is hosted on a server in Netherlands.