AS19108 216.134.72.0/21 CIDR and IP Range Summary.ASN: 19108 - OptimumHost Count: 2046Addressable IPs: 2048216.134.72.0/24216.134.73.0/24216.134.74.0/24216.134.75.0/24216.134.76.0/24216.134.77.0/24216.134.78.0/24216.134.79.0/24