AS20723 178.20.136.0/21 CIDR and IP Range Summary.ASN: 20723 - Avonet S.R.O.Host Count: 2046Addressable IPs: 2048178.20.136.0/24178.20.137.0/24178.20.138.0/24178.20.139.0/24178.20.140.0/24178.20.141.0/24178.20.142.0/24178.20.143.0/24