Chek if an IP is in AWS IP Range

aws-ip.rb

#!/usr/bin/env ruby

require 'net/http'
require 'ipaddr'
require 'json'

url = 'https://ip-ranges.amazonaws.com/ip-ranges.json'
uri = URI(url)
response = Net::HTTP.get(uri)
aws_ranges = JSON.parse(response)
aws_ranges = aws_ranges['prefixes']
aws_ranges.each do |aws_range|
  aws_range['ipaddr_net'] = IPAddr.new(aws_range['ip_prefix'])
end

ARGV.each do |arg|
   in_ranges = aws_ranges.select { |range| range['ipaddr_net'].include? arg }
   puts "IP #{arg} in ranges"
   puts in_ranges
end