Created
April 28, 2016 05:56
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require 'ipaddr' | |
ec2_ranges = %w_ | |
103.4.8.0/21 | |
175.41.192.0/18 | |
176.32.64.0/19 | |
176.34.0.0/19 | |
176.34.32.0/19 | |
46.51.224.0/19 | |
52.192.0.0/15 | |
52.196.0.0/14 | |
52.68.0.0/15 | |
52.95.243.0/24 | |
52.95.255.48/28 | |
54.150.0.0/16 | |
54.168.0.0/16 | |
54.178.0.0/16 | |
54.199.0.0/16 | |
54.238.0.0/16 | |
54.248.0.0/15 | |
54.250.0.0/16 | |
54.64.0.0/15 | |
54.92.0.0/17 | |
54.95.0.0/16 | |
_.map{|range| IPAddr.new(range) } | |
# $ dig +short lambda.ap-northeast-1.amazonaws.com a | |
# 52.69.6.111 | |
# 52.69.23.0 | |
# 52.69.25.229 | |
# 52.69.54.22 | |
# 52.69.67.28 | |
# 52.69.67.226 | |
# 54.64.249.58 | |
# 54.249.77.229 | |
lambda_ips = %w_ | |
52.69.6.111 | |
52.69.23.0 | |
52.69.25.229 | |
52.69.54.22 | |
52.69.67.28 | |
52.69.67.226 | |
54.64.249.58 | |
54.249.77.229 | |
_.map{|l| IPAddr.new(l) } | |
lambda_ips.each do |l| | |
catch(:found) do | |
ec2_ranges.each_with_index do |range, i| | |
if range.include?(l) | |
prefixlen = 32 - (2 ** 32 - 1 - range.instance_eval{ @mask_addr }).to_s(2).length | |
puts "#{l} is included in #{range.to_s}/#{prefixlen}" | |
throw(:found) | |
end | |
end | |
puts "#{l} isn't included in any of ip ranges" | |
end | |
end | |
# 52.69.6.111 is included in 52.68.0.0/15 | |
# 52.69.23.0 is included in 52.68.0.0/15 | |
# 52.69.25.229 is included in 52.68.0.0/15 | |
# 52.69.54.22 is included in 52.68.0.0/15 | |
# 52.69.67.28 is included in 52.68.0.0/15 | |
# 52.69.67.226 is included in 52.68.0.0/15 | |
# 54.64.249.58 is included in 54.64.0.0/15 | |
# 54.249.77.229 is included in 54.248.0.0/15 |
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