AS15395 78.136.56.0/21 CIDR and IP Range Summary.ASN: 15395 - Rackspace Ltd.Host Count: 2046Addressable IPs: 204878.136.56.0/2478.136.57.0/2478.136.58.0/2478.136.59.0/2478.136.60.0/2478.136.61.0/2478.136.62.0/2478.136.63.0/24