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https://github.com/dwisiswant0/cf-check

CloudFlare Checker written in Go
https://github.com/dwisiswant0/cf-check

bugbounty bugbounty-tool bugbountytips cloudflare go golang ip-scanner scanner

Last synced: 7 days ago
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CloudFlare Checker written in Go

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## cf-check
Check an Host is Owned by CloudFlare.

## Install

1. Grab from [releases page](https://github.com/dwisiswant0/cf-check/releases), or
2. If you have [Go1.18+](https://go.dev/dl/) compiler installed & configured:

```console
$ go install github.com/dwisiswant0/cf-check@latest
```

## Usage

```console
$ echo "uber.com" | cf-check
34.98.127.226
```

or

```console
$ cf-check -d
```

### Flags

```console
$ 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
```

## Workaround

The goal is that you don't need to do a port scan if it's proven that the IP is owned by Cloudflare.

```console
$ subfinder -silent -d uber.com | filter-resolved | cf-check -d | anew | naabu -silent -verify | httpx -silent
```

## License

`cf-check` is distributed under Apache License 2.0.