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mkyung/aws_ips.rb

Forked from wbingli/aws_ips.rb
Created April 3, 2016 03:48
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Calculate AWS total IPs
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aws_ips.rb
require 'open-uri'
require 'json'
data = JSON.load(open("https://ip-ranges.amazonaws.com/ip-ranges.json"))
ip_total = data['prefixes'].reduce(0) do | sum, item |
sum += 2 ** (32 - item['ip_prefix'].split('/')[1].to_i)
end
puts "AWS Total IPs: #{ip_total}"
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