AS3 45.221.224.0/20 CIDR and IP Range Summary.ASN: 3 - Massachusetts Institute of TechnologyHost Count: 4094Addressable IPs: 409645.221.224.0/2445.221.225.0/2445.221.226.0/2445.221.227.0/2445.221.228.0/2445.221.229.0/2445.221.230.0/2445.221.231.0/2445.221.232.0/2445.221.233.0/2445.221.234.0/2445.221.235.0/2445.221.236.0/2445.221.237.0/2445.221.238.0/2445.221.239.0/24