AS13 144.105.128.0/21 CIDR and IP Range Summary.ASN: 13 - Headquarters USAISCHost Count: 2046Addressable IPs: 2048144.105.128.0/24144.105.129.0/24144.105.130.0/24144.105.131.0/24144.105.132.0/24144.105.133.0/24144.105.134.0/24144.105.135.0/24