timestamp	ip	host	browser	uri
20190413-08:31:31	54.36.150.21	ip-54-36-150-21.a.ahrefs.com	Mozilla/5.0 (compatible; AhrefsBot/6.1; +http://ahrefs.com/robot/)	/robots.txt
20190418-02:53:58	54.36.150.21	ip-54-36-150-21.a.ahrefs.com	Mozilla/5.0 (compatible; AhrefsBot/6.1; +http://ahrefs.com/robot/)	/robots.txt