See why here: https://www.virustotal.com/nl/ip-address/141.138.117.195/information/
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There are more sites like the one mentioned: https://www.virustotal.com/nl/url/df637dcdd54b7bdaf1afb210050f1270512541df9dae41f813fffe9d32ad72f9/analysis/1384123881/ & http://urlquery.net/report.php?id=7603127 Also via binfostat dot dyndns dot org → htxps://compilr.com/mjcmjc/teste/slb.php (test) Here is a complete list of dynamic dns url providers to be blocked: http://mirror2.malwaredomains.com/files/dynamic_dns.txt
And then there is also this blacklist: http://sourceforge.net/projects/ddnsbl/ credits go here: http://ddnsbl.sourceforge.net/ zheck
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