AS16509 144.220.16.0/21 CIDR and IP Range Summary.ASN: 16509 - Amazon.com Inc.Host Count: 2046Addressable IPs: 2048144.220.16.0/24144.220.17.0/24144.220.18.0/24144.220.19.0/24144.220.20.0/24144.220.21.0/24144.220.22.0/24144.220.23.0/24