AS16509 56.128.128.0/20 CIDR and IP Range Summary.ASN: 16509 - Amazon.com Inc.Host Count: 4094Addressable IPs: 409656.128.128.0/2456.128.129.0/2456.128.130.0/2456.128.131.0/2456.128.132.0/2456.128.133.0/2456.128.134.0/2456.128.135.0/2456.128.136.0/2456.128.137.0/2456.128.138.0/2456.128.139.0/2456.128.140.0/2456.128.141.0/2456.128.142.0/2456.128.143.0/24