mxd4.aruba.it has one IP number , but the reverse is mxd3.aruba.it. eqv.it, jcp.it, m-2.it, anin.it, avsc.it and at least 100 other hosts point to the same IP. aruba.it is a domain controlled by two nameservers at technorail.com. They are on the same IP network. Incoming mail for aruba.it is handled by one mailserver having a total of two IP numbers. They are on the same IP network. aruba.it has one IP number. mxd4.aruba.it is hosted on a server in Italy.