also seems to be fixed for me
Thing to note: it appears doing a HEAD request will give you a 403 error:
curl -LI https://www.cloudflare.com/ips-v4/ -o /dev/null -w '%{http_code}\n' -s
403
curl -L https://www.cloudflare.com/ips-v4/ -o /dev/null -w '%{http_code}\n' -s
200