한국 주요 ISP 네임서버 전파 추적

dnscheck.rb

#!/usr/bin/env ruby

require 'rubygems'
require 'termcolor'

DNS = {
  :kt => ['168.126.63.1','168.126.63.2'],
  :sk => ['210.220.163.82','219.250.36.130','210.94.6.67'],
  :thrunet => ['210.117.65.1', '210.117.65.2'],
  :dacom => ['164.124.101.2','203.248.252.2'],
  :powercom => ['164.124.107.9','203.248.252.2'],
  :dreamline => ['210.181.1.24','210.181.4.25']
}

VERBOSE = false
TARGET = 'orbi.kr'
OLD = /nexon/

loop do

  puts "\n\n" +  Time.now.strftime("%H:%M:%S") + "\n\n"
  DNS.each do |k,v|
    res = v.map { |dns| `dig +short -tns #{TARGET} @#{dns}`.gsub(/\n/,',').gsub(/,$/,'') }.join("\n  ") 
    color = case 
            when res =~ OLD 
              "<red>not yet..</red>".termcolor
            else
              "<yellow>ee!</yellow>".termcolor
            end

    name = "<blue>#{k}</blue>".termcolor
    puts "#{name} => #{("\n  " + res + "\n  ") if VERBOSE}#{color}"
  end

  sleep 10

end