AS16509 18.244.216.0/21 CIDR and IP Range Summary.ASN: 16509 - Amazon.com Inc.Host Count: 2046Addressable IPs: 204818.244.216.0/2418.244.217.0/2418.244.218.0/2418.244.219.0/2418.244.220.0/2418.244.221.0/2418.244.222.0/2418.244.223.0/24