brutexploiter / asn2cidr

A bash script that utilizes WHOIS queries to extract CIDR ranges associated with Autonomous System (AS) numbers using The Routing Assets Database.

asn2cidr

asn2cidr is a bash script that utilizes WHOIS queries to extract CIDR ranges associated with Autonomous System (AS) numbers using The Routing Assets Database.

Installation

Clone the repository:

git clone https://github.com/brutexploiter/asn2cidr.git

Change into the asn2cidr directory:

cd asn2cidr

Make the script executable:

chmod +x asn2cidr.sh

Usage

./asn2cidr.sh [-l <input_file>] [-i <AS_number>] [-o <output_file>] [-h]

Options:
  -l <input_file>: Specify a file containing a list of AS numbers.
  -i <AS_number>: Specify an AS number directly.
  -o <output_file>: Specify the output file to save the results.
  -h: Display this help message.

Query AS numbers directly:

./asn2cidr.sh -i AS6262 -o output.txt

Query AS numbers from a file:

./asn2cidr.sh -l asn.txt -o output.txt

Reference

https://apexvicky.medium.com/bug-bounty-methodology-horizontal-enumeration-89f7cd172e6e