This script scans Millions of Cloudflare IP addresses and generates a result file containing the IPs which are work with CDN.

This script uses v2ray+vmess+websocket+tls by default and if you want to use it behind your Cloudflare proxy then you have to set up a vmess account, otherwise, it will use the default configuration.

You have to install the following packages:

git
tput
bc
curl
nmap
parallel (version > 20220515)

[~]>$ git clone https://github.com/MortezaBashsiz/CFScanner.git

[~]>$ cd CFScanner/scripts
[~/CFScanner/scripts]> chmod +x v2ctl v2ctl-mac v2ray v2ray-mac

[~/CFScanner/scripts]>$ curl -s http://bot.sudoer.net/config.real -o ./config.real

In the config file the variables are

id:         User's UUID
Host:       Host address which is behind Cloudflare
Port:       Port which you are using behind Cloudflare on your origin server
path:       Websocket endpoint like api20
serverName: SNI

At following command pay attention to the numbers threads, speed and Custom Subnet File.

Threads: This is an integer number that defines the parallel threads count

Speed: This is the filter that you can define to list the IPs based on download speed. The values must be one of [25 50 100 150 200 250 500], and all values are in KBPS (Kilo Bytes Per Second). For example, if you set it to 50, it means that you will only list the IPs which have a download speed of more than 50 KB/S.

Custom Subnet File: This is an optional argument which is a file address if you want to execute only some specific subnets. Then put your subnets in a file and pass the file as an argument to the command.

[~/CFScanner/scripts]>$ bash cfFindIP.sh threads ./config.real speed [Custome Subnet File]

[~/CFScanner/scripts]>$ bash cfFindIP.sh 8 ./config.real 100

[~/CFScanner/scripts]>$ bash cfFindIP.sh 8 ./config.real 100 ./custom.subnets

Which the custom.subnets is like as follows. You can edit this file and add your subnets in each line.

[~/CFScanner/scripts]>$ cat custom.subnets 
5.226.179.0/24
203.89.5.0/24
[~/CFScanner/scripts]>$

It will generate a file in datetime format in the result directory.

[~/CFScanner]>$ ls result/
20230120-203358-result.cf
[~/CFScanner]>$

You can find a video guide for this script on youtube.