AS16509 54.192.208.0/21 CIDR and IP Range Summary.ASN: 16509 - Amazon.com Inc.Host Count: 2046Addressable IPs: 204854.192.208.0/2454.192.209.0/2454.192.210.0/2454.192.211.0/2454.192.212.0/2454.192.213.0/2454.192.214.0/2454.192.215.0/24