AS16509 54.231.40.0/21 CIDR and IP Range Summary.ASN: 16509 - Amazon.com Inc.Host Count: 2046Addressable IPs: 204854.231.40.0/2454.231.41.0/2454.231.42.0/2454.231.43.0/2454.231.44.0/2454.231.45.0/2454.231.46.0/2454.231.47.0/24