mx.racsro.us has three IP numbers. All of them are on the same IP network. mx.iapl.net, mx.mvcs.net, mx.zenny.com, mx.bamka.com, mx.loop9.net and at least 44 other hosts point to the same IP. racsro.us is a domain controlled by two nameservers at bluegravity.com. They are on the same IP network. Incoming mail for racsro.us is handled by one mailserver having a total of two IP numbers. They are on the same IP network. racsro.us has one IP number. mx.racsro.us is hosted on three servers in United States.