AS16509 99.77.152.0/21 CIDR and IP Range Summary.ASN: 16509 - Amazon.com Inc.Host Count: 2046Addressable IPs: 204899.77.152.0/2499.77.153.0/2499.77.154.0/2499.77.155.0/2499.77.156.0/2499.77.157.0/2499.77.158.0/2499.77.159.0/24