Is unallocated.barefruit.co.uk Safe?

SPAM caller from "Windows technical support" with heavy Indian or similar accent wanted me to use the Windows Run panel to call Internet Explorer and load this site. He gave ***** which, nslookup maps to this IP address, which in turn maps to unallocated.barefruit.co.uk I did this in the past and brought up a web page, where they wanted me to download software that would let them take control and "fix my computer," and event that I reported to WOT at that URL.

According to forums.verizon.com, unallocated.***** is responsible for a "FIOS DNS hack / re-direct to barefruit.co.uk*****....causing super slow resolve times for websites, super SLOW connection times for...VPN and lack of DNS." Verizon responded that "This is expected bahavior[sic]. The Verizon Online DNS resolvers have NXDOMAIN redirection services that redirect any unknown host to a sponsored search page," and provide opt-out instructions. At barefruit.co.uk/opt-out/, more thorough instructions are provided, because "Barefruit recognises that some people - mainly technically savvy advanced users, may wish to opt-out of this service," which is "suggesting relevant alternatives as opposed to serving unintelligible error messages." They note that your new "DNS address must be hardcoded either into the network settings of your connection or on to your router." Before opting out, you may notice your machine sending info to 92.242.140.21 as often as it would to DNS - that is, alot. So if you'd like to set some firewall rules first, the IPv4 ranges (courtesy of *****) are: unallocated.barefruit.co.uk ***** - ***** barefruit.co.uk ***** - ***** Please be aware that these subnet ranges are only for these specific domains, not all of Barefruit Ltd. AS45028, and that blocking ***** will prevent access to ***** See tcpiputils.com for more info.