Summary
dani.dds.nl has one IP number , but the reverse is
ns1.dds.nl.
ns1.dds.nl point to the same IP.
dds.nl is a domain controlled by two nameservers at
dds.nl themselves. They are on the same IP network. Incoming mail for
dds.nl is handled by five mailservers also at
dds.nl. All of them are on the same IP network.
dds.nl has one IP number.
dani.dds.nl is hosted on a server in Netherlands.