AS16509 40.183.16.0/21 CIDR and IP Range Summary.ASN: 16509 - Amazon.com Inc.Host Count: 2046Addressable IPs: 204840.183.16.0/2440.183.17.0/2440.183.18.0/2440.183.19.0/2440.183.20.0/2440.183.21.0/2440.183.22.0/2440.183.23.0/24