AS16509 216.137.40.0/21 CIDR and IP Range Summary.ASN: 16509 - Amazon.com Inc.Host Count: 2046Addressable IPs: 2048216.137.40.0/24216.137.41.0/24216.137.42.0/24216.137.43.0/24216.137.44.0/24216.137.45.0/24216.137.46.0/24216.137.47.0/24