Ran into a user agent from DNSRight today that claimed to be some link check tool that doesn't appear on their site.
18.104.22.168 "GET / "So I ran some of their other tools that don't identify themselves at all.
"http://www.dnsright.com/" "DNSRight.com WebBot Link Ckeck Tool. Report abuse to: email@example.com"
22.214.171.124 "GET / HTTP/1.1" "-" "-"They host this mess at cari.net so just block 'em.
OrgName: California Regional Intranet, Inc.No more DNS Right or Left, it's now DNS Gone.
NetRange: 126.96.36.199 - 188.8.131.52