DINETHOSTING aka Digital Network JSC are a large Russian host that regularly hosts malware sites. Yesterday I came across the domain curvecheese.com (126.96.36.199) being used in a malicious spam run. This is in a block 188.8.131.52/20 allocated to this host.
I tend to block DINETHOSTING ranges as soon as I see malware on them. If you are blocking this host, I would recommend you add 184.108.40.206/20 to your blocklist.