AS16509 13.57.136.0/21 CIDR and IP Range Summary.ASN: 16509 - Amazon.com Inc.Host Count: 2046Addressable IPs: 204813.57.136.0/2413.57.137.0/2413.57.138.0/2413.57.139.0/2413.57.140.0/2413.57.141.0/2413.57.142.0/2413.57.143.0/24