def ip_address_list
@@ip_address_list ||= [
"210.230.128.224/28",
"121.111.227.160/27",
"61.117.1.0/28",
"219.108.158.0/27",
"219.125.146.0/28",
"61.117.2.32/29",
"61.117.2.40/29",
"219.108.158.40/29",
"219.125.148.0/25",
"222.5.63.0/25",
"222.5.63.128/25",
"222.5.62.128/25",
"59.135.38.128/25",
"219.108.157.0/25",
"219.125.145.0/25",
"121.111.231.0/25",
"121.111.227.0/25",
"118.152.214.192/26",
"118.159.131.0/25",
"118.159.133.0/25",
"118.159.132.160/27",
"111.86.142.0/26",
"111.86.141.64/26",
"111.86.141.128/26",
"111.86.141.192/26",
"118.159.133.192/26"
].map {|ip| IPAddr.new(ip) }
end