AS48917 78.83.128.0/21 CIDR and IP Range Summary.ASN: 48917 - Optinet LtdHost Count: 2046Addressable IPs: 204878.83.128.0/2478.83.129.0/2478.83.130.0/2478.83.131.0/2478.83.132.0/2478.83.133.0/2478.83.134.0/2478.83.135.0/24