AS19994 23.253.192.0/19 CIDR and IP Range Summary.ASN: 19994 - Rackspace HostingHost Count: 8190Addressable IPs: 819223.253.192.0/2423.253.193.0/2423.253.194.0/2423.253.195.0/2423.253.196.0/2423.253.197.0/2423.253.198.0/2423.253.199.0/2423.253.200.0/2423.253.201.0/2423.253.202.0/2423.253.203.0/2423.253.204.0/2423.253.205.0/2423.253.206.0/2423.253.207.0/2423.253.208.0/2423.253.209.0/2423.253.210.0/2423.253.211.0/2423.253.212.0/2423.253.213.0/2423.253.214.0/2423.253.215.0/2423.253.216.0/2423.253.217.0/2423.253.218.0/2423.253.219.0/2423.253.220.0/2423.253.221.0/2423.253.222.0/2423.253.223.0/24