AS16509 3.5.216.0/21 CIDR and IP Range Summary.ASN: 16509 - Amazon.com Inc.Host Count: 2046Addressable IPs: 20483.5.216.0/243.5.217.0/243.5.218.0/243.5.219.0/243.5.220.0/243.5.221.0/243.5.222.0/243.5.223.0/24