Incoming mail for extranet.letron.de is handled by two mailservers having a total of four IP numbers. There are four duplicated IP numbers. Some of them are on the same IP network. extranet.letron.de has one IP number , but the reverse is mail01.letron.de. 11en.net, net22.de, tds-nws.de, abohost.de, medicone.org and at least 63 other hosts share mailservers with this domain. letron.de is a domain controlled by two nameservers at schlund.de. They are on different IP networks. Incoming mail for letron.de is handled by three mailservers having a total of five IP numbers. There are four duplicated IP numbers. Some of them are on the same IP network. letron.de has one IP number. extranet.letron.de is hosted on a server in Germany.