AS21056 91.143.192.0/20 CIDR and IP Range Summary.ASN: 21056 - Vianova S.p.AHost Count: 4094Addressable IPs: 409691.143.192.0/2491.143.193.0/2491.143.194.0/2491.143.195.0/2491.143.196.0/2491.143.197.0/2491.143.198.0/2491.143.199.0/2491.143.200.0/2491.143.201.0/2491.143.202.0/2491.143.203.0/2491.143.204.0/2491.143.205.0/2491.143.206.0/2491.143.207.0/24