AS16509 99.78.176.0/21 CIDR and IP Range Summary.ASN: 16509 - Amazon.com Inc.Host Count: 2046Addressable IPs: 204899.78.176.0/2499.78.177.0/2499.78.178.0/2499.78.179.0/2499.78.180.0/2499.78.181.0/2499.78.182.0/2499.78.183.0/24