To start with, you have a old version of avast installed. I suggest you perform a clean installation of the latest version. https://forum.avast.com/index.php?topic=169255.msg1203279#msg1203279
Blacklisted: http://zulu.zscaler.com/submission/show/cf9b2636885b7b5a00fb3e7083bafec9-1429039522
Suspicion of Spam: /> <link href="/temp…
Problems on that ASN: http://urlquery.net/report.php?id=1429039874039 http://urlquery.net/report.php?id=1429039909690
Outdated software: https://sitecheck.sucuri.net/results/dokuga.com
DNS problems: http://dnscheck.pingdom.com/?domain=Dokuga.com
HUGE(!) security problems: https://www.ssllabs.com/ssltest/analyze.html?d=dokuga.com
Pointing to blacklisted site: http://quttera.com/detailed_report/Dokuga.com
If avast wasn’t blocking access to it, it wasn’t doing its job Be glad that avast protected your system from malicious things.