AS16509 64.252.72.0/21 CIDR and IP Range Summary.ASN: 16509 - Amazon.com Inc.Host Count: 2046Addressable IPs: 204864.252.72.0/2464.252.73.0/2464.252.74.0/2464.252.75.0/2464.252.76.0/2464.252.77.0/2464.252.78.0/2464.252.79.0/24