113.142.22.0-113.142.23.255 113.142.22.0/23
113.142.24.0-113.142.31.255 113.142.24.0/21
113.142.32.0-113.142.47.255 113.142.32.0/20
113.142.48.0-113.142.51.255 113.142.48.0/22