> The Cloudflare-APNIC experiment uses two IPv4 address ranges, 1.1.1/24 and 1.0.0/24, which have been reserved for research use. Cloudflare's new DNS uses two addresses within those ranges, 1.1.1.1 and 1.0.0.1.
They had acknowledged to themselves going into it that the IPs weren't "normal". They could have easily chosen a safer range if that was a priority.