Check an Host is Owned by CloudFlare.
- Grab from releases page, or
- If you have Go1.18+ compiler installed & configured:
$ go install github.com/dwisiswant0/cf-check@latest
$ echo "uber.com" | cf-check
34.98.127.226
or
$ cf-check -d <FILE>
$ cf-check -h
Usage of cf-check:
-c int
Set the concurrency level (default: 20)
-cf
Show CloudFlare only
-d Print domains instead of IP addresses
The goal is that you don't need to do a port scan if it's proven that the IP is owned by Cloudflare.
$ subfinder -silent -d uber.com | filter-resolved | cf-check -d | anew | naabu -silent -verify | httpx -silent
cf-check
is distributed under Apache License 2.0.