Summary
Incoming mail for
bitbucket.cistron.nl is handled by one mailserver at
cistron.nl.
bitbucket.cistron.nl has one IP number , but the reverse is
localhost.
ns4.de,
umcn.nl,
sunx.org,
cabi.net,
celox.nl and at least 100 other hosts point to the same IP.
grace.vbn.nl,
tiger.vbn.nl,
orion.vbn.nl,
cobra.vbn.nl,
solar.vbn.nl and at least 35 other hosts use this as a mailserver.
grace.vbn.nl,
tiger.vbn.nl,
orion.vbn.nl,
cobra.vbn.nl,
solar.vbn.nl and at least 34 other hosts share mailservers with this domain.
cistron.nl is delegated to two nameservers, however both delegated nameservers are missing in the zone and two other nameservers are listed instead. There are two duplicated IP numbers. Some of them are on the same IP network. Incoming mail for
cistron.nl is handled by two mailservers having a total of four IP numbers. There are two duplicated IP numbers. Some of them are on the same IP network.