iptoasn

iptoasn is a Ruby gem that provides a simple way to query Autonomous System (AS) information for a given IP address using the iptoasn.com dataset. This repo only contains the iptoasn gem which is responsible for loading, parsing, and searching through the ip2asn dataset. The data itself is in the iptoasn-data repository. This makes managing updates to the code vs the data a bit simpler.

Features

• Query AS information by IP address.
• Efficient lazy loading to minimize memory usage.
• Compatible with IPv4 addresses.

Installation and Updates

Add this line to your application's Gemfile:

gem 'iptoasn'
gem 'iptoasn-data'

And then execute:

bundle install

The dataset can be updated periodically by running bundle update iptoasn-data.

Usage

Here is a basic example of how to use the iptoasn gem:

require 'iptoasn'

finder = IpToAsn::Lookup.new
ip_address = ARGV[0]

response = finder.lookup(ip_address)
if response.nil?
  puts "Couldn't locate #{ip_address}!"
  exit 1
end

puts "#{ip_address} is in #{response[:country_code]} and belongs to #{response[:as_name]}"

License

The gem is available as open source under the terms of the MIT License.

Acknowledgments

This gem utilizes the iptoasn.com dataset. Special thanks to them for providing this valuable resource.