nginx [engine x] is a HTTP server and mail proxy server written by Igor Sysoev.
HiChina DNS services
QQ Mail provider
The DOCTYPE is a required preamble for HTML5 websites.
UTF-8 (8-bit UCS/Unicode Transformation Format) is a variable-length character encoding for Unicode. It is the preferred encoding for web pages.
Sites using Html 5 Video Tag
These websites are related to infobigdata.com in terms of content, traffic and structure