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nginx [engine x] is a HTTP server and mail proxy server written by Igor Sysoev.
HiChina DNS services
The DOCTYPE is a required preamble for HTML5 websites.
These websites are related to squ.net.cn in terms of content, traffic and structure
hnhyedu.net
17net.net
shengda.edu.cn
whuphd.com
gxzszx.com
ncbuct.com
51edu.com
ycu.edu.cn