AS16509 54.230.72.0/21 CIDR and IP Range Summary.ASN: 16509 - Amazon.com Inc.Host Count: 2046Addressable IPs: 204854.230.72.0/2454.230.73.0/2454.230.74.0/2454.230.75.0/2454.230.76.0/2454.230.77.0/2454.230.78.0/2454.230.79.0/24