Summary
bonn.vuurwerk.nl has one IP number , which also has a corresponding reverse pointer.
ns3.vuurwerk.nl and
ns3.vuurwerk.net point to the same IP.
vuurwerk.nl is a domain controlled by three nameservers. All of them are on different IP networks. Incoming mail for
vuurwerk.nl is handled by five mailservers having a total of three IP numbers. There are six duplicated IP numbers. Some of them are on the same IP network.
bonn.vuurwerk.nl is hosted on a server in Netherlands.