AS16509 16.187.56.0/21 CIDR and IP Range Summary.ASN: 16509 - Amazon.com Inc.Host Count: 2046Addressable IPs: 204816.187.56.0/2416.187.57.0/2416.187.58.0/2416.187.59.0/2416.187.60.0/2416.187.61.0/2416.187.62.0/2416.187.63.0/24