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rhenning/maxcdn_cidr_ck.rb

Created July 20, 2016 19:15
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Check for an address in MaxCDN's address space
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maxcdn_cidr_ck.rb
require 'netaddr'
require 'open-uri'
MAXCDN_IPS =
open('https://www.maxcdn.com/one/assets/ips.txt').map(&:chomp).map do |range|
NetAddr::CIDR.create(range).enumerate
end.flatten
puts MAXCDN_IPS.include?(ARGV.first)
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