Summary
ns1.webreus.nl has one IP number , which also has a corresponding reverse pointer.
de4.nl,
ndr.nl,
11a.nl,
hr2.nl,
amp1.nl and at least 100 other hosts use this as a nameserver.
webreus.nl is delegated to two nameservers, however one extra nameserver is listed in the zone. All of them are on the same IP network. Incoming mail for
webreus.nl is handled by two mailservers at
webreus.nl themselves. They are on the same IP network.
webreus.nl has one IP number.
ns1.webreus.nl is hosted on a server in Netherlands.