mx5.news.net.au has one IP number. gq.com.au, news.net.au, news.com.au, mxnet.com.au, taste.com.au and at least 92 other hosts use this as a mailserver. news.net.au is delegated to four nameservers, however eight extra nameservers are listed in the zone. Some of them are on the same IP network. Incoming mail for news.net.au is handled by four mailservers at news.net.au themselves. Some of them are on the same IP network. mx5.news.net.au is hosted on a server in Australia.