AS16509 54.239.120.0/21 CIDR and IP Range Summary.ASN: 16509 - Amazon.com Inc.Host Count: 2046Addressable IPs: 204854.239.120.0/2454.239.121.0/2454.239.122.0/2454.239.123.0/2454.239.124.0/2454.239.125.0/2454.239.126.0/2454.239.127.0/24