AS16509 54.240.56.0/21 CIDR and IP Range Summary.ASN: 16509 - Amazon.com Inc.Host Count: 2046Addressable IPs: 204854.240.56.0/2454.240.57.0/2454.240.58.0/2454.240.59.0/2454.240.60.0/2454.240.61.0/2454.240.62.0/2454.240.63.0/24