Blacklistings on that IP/ASN : https://www.virustotal.com/en/ip-address/66.171.168.106/information/ http://urlquery.net/report.php?id=1493889693910
Vulnerable libaries used : http://retire.insecurity.today/#!/scan/6146b8a0476aea627134965cf0886cdab8b885e2ef54e194f99231cf8cfee980