AS16509 18.239.16.0/20 CIDR and IP Range Summary.ASN: 16509 - Amazon.com Inc.Host Count: 4094Addressable IPs: 409618.239.16.0/2418.239.17.0/2418.239.18.0/2418.239.19.0/2418.239.20.0/2418.239.21.0/2418.239.22.0/2418.239.23.0/2418.239.24.0/2418.239.25.0/2418.239.26.0/2418.239.27.0/2418.239.28.0/2418.239.29.0/2418.239.30.0/2418.239.31.0/24