AS16509 54.239.64.0/21 CIDR and IP Range Summary.ASN: 16509 - Amazon.com Inc.Host Count: 2046Addressable IPs: 204854.239.64.0/2454.239.65.0/2454.239.66.0/2454.239.67.0/2454.239.68.0/2454.239.69.0/2454.239.70.0/2454.239.71.0/24