mail.fai.ro has one IP number , but the reverse is gator378.hostgator.com. abfu.net, vajo.net, estevan.ca, larleo.com, soneca.net and at least 100 other hosts point to the same IP. fai.ro use this as a mailserver. fai.ro is a domain controlled by five nameservers. There are two duplicated IP numbers. All of them are on the same IP network. Incoming mail for fai.ro is handled by one mailserver at fai.ro themselves. fai.ro has one IP number. mail.fai.ro is hosted on a server in United States even though the hostname implies Romania.