AS16509 143.204.48.0/21 CIDR and IP Range Summary.ASN: 16509 - Amazon.com Inc.Host Count: 2046Addressable IPs: 2048143.204.48.0/24143.204.49.0/24143.204.50.0/24143.204.51.0/24143.204.52.0/24143.204.53.0/24143.204.54.0/24143.204.55.0/24