54.242.142.0-54.242.143.255 54.242.142.0/23
54.242.144.0-54.242.151.255 54.242.144.0/21
54.242.152.0-54.242.155.255 54.242.152.0/22
54.242.156.0-54.242.157.255 54.242.156.0/23