DINETHOSTING aka Digital Network JSC are a large Russian host that regularly hosts malware sites. Yesterday I came across the domain curvecheese.com (220.127.116.11) being used in a malicious spam run. This is in a block 18.104.22.168/20 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 22.214.171.124/20 to your blocklist.