AS16509 144.220.40.0/21 CIDR and IP Range Summary.ASN: 16509 - Amazon.com Inc.Host Count: 2046Addressable IPs: 2048144.220.40.0/24144.220.41.0/24144.220.42.0/24144.220.43.0/24144.220.44.0/24144.220.45.0/24144.220.46.0/24144.220.47.0/24