your HTTP request from 54.146.227.92 at 2019-02-19 11:30:21:

GET /http-request HTTP/1.1
User-Agent: CCBot/2.0 (https://commoncrawl.org/faq/)
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
If-Modified-Since: Mon, 21 Jan 2019 19:42:50 GMT
Host: fex.rus.uni-stuttgart.de
Connection: Keep-Alive
Accept-Encoding: gzip