142.251.43.0-142.251.43.255 142.251.43.0/24
142.251.44.0-142.251.47.255 142.251.44.0/22
142.251.48.0-142.251.63.255 142.251.48.0/20
142.251.64.0-142.251.127.255 142.251.64.0/18
142.251.128.0-142.251.255.255 142.251.128.0/17