asn2ip is a command-line tool that retrieves and displays AS information.

Features

• Uses bgpview.io api
• Query by ASN for information
  • IPv4 and IPv6 prefixes.
• Identify ASN member ship
  • By IP
  • By Prefix
• Output
  • TEXT formatted similar to asnmap
  • STDOUT

Why does this seem like asnmap?

We love asnmap, but we didn't want to use the free IPtoASN database that was being used. We've observed different results when compared with data from bgpview.io and bgp.he.net At some point, I'm sure we'll want to merge this option into asnmap, but for now this is where we landed.

Installation

1. Clone the repository:

git clone https://github.com/nickpending/asn2ip.git

2. Build the project:

go build

Usage

asn2ip -a ASNUMBER [-ipv4 | -ipv6] [-v] | -i IPADDRESS [-v] | -p CIDR [-v]

Example: -a AS6431 -ipv4 -debug | -i 12.153.241.125 -debug | -p 1.2.3.0/24 -debug

Flags

Flags:
  -a, -a	ASN to query, e.g., AS6431
  -i, -i	IP address to query
  -ipv4, -i	Display only IPv4 prefixes
  -ipv6, -i	Display only IPv6 prefixes
  -p, -p	CIDR prefix to query
  -debug, -d	Print debug information including raw requests and responses
  -version, -v	Print the version and exit

Examples

• Query ASN and display IPv4 prefixes:

asn2ip -a AS15169 -ipv4

• Query IP address:

asn2ip -i 8.8.8.8

• Query CIDR prefix:

asn2ip -p 8.8.8.0/24

Development

To contribute to the project:

1. Fork the repository.
2. Create a new branch.
3. Make your changes.
4. Submit a pull request.

License

This project is licensed under the MIT License - see the LICENSE file for details.

Authors

• Rudy R - Initial work - nickpending

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Enjoy using asn2ip! If you have any questions or feedback, please feel free to contact us.