server.isd.lt has one IP number , which also has a corresponding reverse pointer. mail.eok.lt, mail.tgp.lt, mail.irs.lt, mail.isd.lt, mail.nvip.eu and at least 71 other hosts point to the same IP. isd.lt is a domain controlled by three nameservers. All of them are on different IP networks. Incoming mail for isd.lt is handled by one mailserver at isd.lt themselves. isd.lt has one IP number. server.isd.lt is hosted on a server in Lithuania.