mail4.iata.org has eleven IP numbers. Some of them are on the same IP network. This hostname cnames to cluster2a.us.messagelabs.com. mail3.iata.org, mailin2.mcci.com, mailin1.mcci.com, mx1.dragonair.com, mx2.dragonair.com and at least 16 other hosts point to the same IP. iata.org is delegated to six nameservers, however two extra nameservers are listed in the zone. All of them are on different IP networks. Incoming mail for iata.org is handled by two mailservers having a total of eleven IP numbers. There are eight duplicated IP numbers. Some of them are on the same IP network. iata.org has one IP number.