Summary
ns1.first-ns.de has one IP number , which also has a corresponding reverse pointer.
ns00.de,
ns2.xbe.ch,
sofafoo.com,
ns4.leine.de,
ns1.ggffm.de and at least 48 other hosts point to the same IP.
noa.de,
dhg.de,
smf.de,
mrks.eu,
sout.de and at least 100 other hosts use this as a nameserver.
swin.de,
wacken.net,
swikifurt.de,
clsystems.de,
ipcop-forum.de and at least one other host use this as a mailserver.
first-ns.de is a domain controlled by three nameservers. All of them are on different IP networks. Incoming mail for
first-ns.de is handled by one mailserver at
first-ns.de themselves.
first-ns.de has one IP number , but the reverse is
www4.your-server.de.
ns1.first-ns.de is hosted on a server in Germany.