AS16509 3.163.48.0/21 CIDR and IP Range Summary.ASN: 16509 - Amazon.com Inc.Host Count: 2046Addressable IPs: 20483.163.48.0/243.163.49.0/243.163.50.0/243.163.51.0/243.163.52.0/243.163.53.0/243.163.54.0/243.163.55.0/24