mail.d4net.de has one IP number , via cname to ghs.google.com. lev.am, baby.bz, tdcs.no, ix3.net, 15x.com and at least 100 other hosts point to the same IP. d4net.de is a domain controlled by three nameservers at udagdns.net. All of them are on the same IP network. Incoming mail for d4net.de is handled by two mailservers on different IP networks. d4net.de has one IP number. mail.d4net.de is hosted on a server in United States even though the hostname implies Germany.