pop.cksn.net has one IP number , via cname to mx622.now.net.cn , which also has a corresponding reverse pointer. dv.com.tw, mail.414.la, mflchina.com, mail.zkgz.com, mail.pycy.net and at least 29 other hosts point to the same IP. cksn.net is a domain controlled by two nameservers on different IP networks. Incoming mail for cksn.net is handled by seven mailservers having a total of 28 IP numbers. Some of them are on the same IP network. cksn.net has one IP number. pop.cksn.net is hosted on a server in Hong Kong.