https://www.whois.com
https://www.virustotal.com/gui/home/upload
https://sitereview.bluecoat.com/#
https://urlscan.io/search/#sg.appfolio.com
https://gchq.github.io/CyberChef
https://mxtoolbox.com/EmailHeaders.aspx
https://threats.kaspersky.com/en/threat