AS16509 15.221.40.0/21 CIDR and IP Range Summary.ASN: 16509 - Amazon.com Inc.Host Count: 2046Addressable IPs: 204815.221.40.0/2415.221.41.0/2415.221.42.0/2415.221.43.0/2415.221.44.0/2415.221.45.0/2415.221.46.0/2415.221.47.0/24