The full list is available for download here (23mb) https://github.com/pirate/sites-using-cloudflare/raw/master/...
I will be updating it as I find more domains.
I'm assuming this list is based on DNS records? I wonder what proportion of those offloaded their SSL to Cloudflare.
Fixed the duplicates: https://github.com/pirate/sites-using-cloudflare/raw/master/...
The full list is available for download here (23mb) https://github.com/pirate/sites-using-cloudflare/raw/master/...
I will be updating it as I find more domains.