nginx [engine x] is a HTTP server and mail proxy server written by Igor Sysoev.
Websites using https protocol.
The DOCTYPE is a required preamble for HTML5 websites.
These websites are related to planet-energie.de in terms of content, traffic and structure
projekt-oekovest.de
bing.com
planet-tegel.de
healthyplanet.de
ballersplanet.de
littleplanet.nl
urquellwasser.eu
blog.chic-planet.fr