Summary
ns64.1and1.es has one IP number , but the reverse is
ns64.1und1.de.
ns64.1und1.de point to the same IP.
sne.es,
2jj.es,
tdc.es,
ats.ag,
ar0.biz and at least 100 other hosts use this as a nameserver.
tvonlinegratis.tv use this as a mailserver.
1and1.es 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
1and1.es is handled by three mailservers at
kundenserver.de. All of them are on the same IP network.
1and1.es has one IP number.
ns64.1and1.es is hosted on a server in Germany even though the hostname implies Spain.