your HTTP request from 54.234.75.144 at 2019-01-21 20:42:50:

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: Wed, 19 Dec 2018 09:12:14 GMT
Host: fex.rus.uni-stuttgart.de
Connection: Keep-Alive
Accept-Encoding: gzip