AS138371 121.251.224.0/20 CIDR and IP Range Summary.ASN: 138371 - Cernet2 Regional Ix at Ocean University ofHost Count: 4094Addressable IPs: 4096121.251.224.0/24121.251.225.0/24121.251.226.0/24121.251.227.0/24121.251.228.0/24121.251.229.0/24121.251.230.0/24121.251.231.0/24121.251.232.0/24121.251.233.0/24121.251.234.0/24121.251.235.0/24121.251.236.0/24121.251.237.0/24121.251.238.0/24121.251.239.0/24