Summary
host-132.pxs.nl has one IP number , which also has a corresponding reverse pointer.
ns.coolcom.nl point to the same IP.
pxs.nl is a domain controlled by two nameservers at
coolcom.nl. They are on different IP networks. Incoming mail for
pxs.nl is handled by two mailservers at
pxs.nl themselves. They are on different IP networks.
pxs.nl has two IP numbers. They are on different IP networks.
host-132.pxs.nl is hosted on a server in Netherlands.