AS19994 50.57.64.0/21 CIDR and IP Range Summary.ASN: 19994 - Rackspace HostingHost Count: 2046Addressable IPs: 204850.57.64.0/2450.57.65.0/2450.57.66.0/2450.57.67.0/2450.57.68.0/2450.57.69.0/2450.57.70.0/2450.57.71.0/24