hercai.tr.net has one IP number , which also has a corresponding reverse pointer. ertok.com, ytyco.net, cbcmed.com, hitit3.com, dem.com.tr and at least 100 other hosts point to the same IP. tr.net is a domain controlled by two nameservers at tr.net.tr. They are on the same IP network. Incoming mail for tr.net is handled by one mailserver having a total of three IP numbers. All of them are on the same IP network. tr.net has one IP number. hercai.tr.net is hosted on a server in Turkey.