AS13 144.104.64.0/21 CIDR and IP Range Summary.ASN: 13 - Headquarters USAISCHost Count: 2046Addressable IPs: 2048144.104.64.0/24144.104.65.0/24144.104.66.0/24144.104.67.0/24144.104.68.0/24144.104.69.0/24144.104.70.0/24144.104.71.0/24