AS19994 173.203.80.0/21 CIDR and IP Range Summary.ASN: 19994 - Rackspace HostingHost Count: 2046Addressable IPs: 2048173.203.80.0/24173.203.81.0/24173.203.82.0/24173.203.83.0/24173.203.84.0/24173.203.85.0/24173.203.86.0/24173.203.87.0/24