ns2.xinnetdns.com has two IP numbers. They are on different IP networks. ns4.xinnet.com point to the same IP. 44k.cn, ead.cn, whe.cc, zl6.net, ksjx.cn and at least 100 other hosts use this as a nameserver. hostmaster.ns2.xinnetdns.com are subdomains to this hostname. xinnetdns.com is a domain controlled by four nameservers having a total of eight IP numbers. Some of them are on the same IP network. Incoming mail for xinnetdns.com is handled by two mailservers at xinnetdns.com themselves having a total of three IP numbers. Two of them are on the same IP network. xinnetdns.com has one IP number. ns2.xinnetdns.com is hosted on two servers in China.
CNNIC-SINO-I Beijing CE Huatong Information Technology Co., Ltd. Block A, Building No.2, No.1, Disheng North Street, Beijing Economic-Technological Development Area, Beijing