AS20021 72.4.160.0/20 CIDR and IP Range Summary.ASN: 20021 - Ntirety Inc.Host Count: 4094Addressable IPs: 409672.4.160.0/2472.4.161.0/2472.4.162.0/2472.4.163.0/2472.4.164.0/2472.4.165.0/2472.4.166.0/2472.4.167.0/2472.4.168.0/2472.4.169.0/2472.4.170.0/2472.4.171.0/2472.4.172.0/2472.4.173.0/2472.4.174.0/2472.4.175.0/24