AS16509 54.230.136.0/21 CIDR and IP Range Summary.ASN: 16509 - Amazon.com Inc.Host Count: 2046Addressable IPs: 204854.230.136.0/2454.230.137.0/2454.230.138.0/2454.230.139.0/2454.230.140.0/2454.230.141.0/2454.230.142.0/2454.230.143.0/24