AS16509 54.192.56.0/21 CIDR and IP Range Summary.ASN: 16509 - Amazon.com Inc.Host Count: 2046Addressable IPs: 204854.192.56.0/2454.192.57.0/2454.192.58.0/2454.192.59.0/2454.192.60.0/2454.192.61.0/2454.192.62.0/2454.192.63.0/24