142.250.186.0-142.250.187.255 142.250.186.0/23
142.250.188.0-142.250.191.255 142.250.188.0/22
142.250.192.0-142.250.255.255 142.250.192.0/18
142.251.0.0-142.251.255.255 142.251.0.0/16