AS16509 13.33.72.0/21 CIDR and IP Range Summary.ASN: 16509 - Amazon.com Inc.Host Count: 2046Addressable IPs: 204813.33.72.0/2413.33.73.0/2413.33.74.0/2413.33.75.0/2413.33.76.0/2413.33.77.0/2413.33.78.0/2413.33.79.0/24