ns.dts.mg has one IP number , which also has a corresponding reverse pointer. co.mg, aro.mg, ore.mg, bit.mg, acm.mg and at least 100 other hosts use this as a nameserver. ocielec.mg, sacimem.mg and promodim.mg use this as a mailserver. dts.mg is a domain controlled by two nameservers at dts.mg themselves. They are on different IP networks. Incoming mail for dts.mg is handled by two mailservers also at dts.mg. They are on different IP networks. ns.dts.mg is hosted on a server in Madagascar.