AS16509 3.163.152.0/21 CIDR and IP Range Summary.ASN: 16509 - Amazon.com Inc.Host Count: 2046Addressable IPs: 20483.163.152.0/243.163.153.0/243.163.154.0/243.163.155.0/243.163.156.0/243.163.157.0/243.163.158.0/243.163.159.0/24