AS16509 18.155.16.0/21 CIDR and IP Range Summary.ASN: 16509 - Amazon.com Inc.Host Count: 2046Addressable IPs: 204818.155.16.0/2418.155.17.0/2418.155.18.0/2418.155.19.0/2418.155.20.0/2418.155.21.0/2418.155.22.0/2418.155.23.0/24