AS17231 63.240.192.0/20 CIDR and IP Range Summary.ASN: 17231 - AT&T Enhanced Network ServicesHost Count: 4094Addressable IPs: 409663.240.192.0/2463.240.193.0/2463.240.194.0/2463.240.195.0/2463.240.196.0/2463.240.197.0/2463.240.198.0/2463.240.199.0/2463.240.200.0/2463.240.201.0/2463.240.202.0/2463.240.203.0/2463.240.204.0/2463.240.205.0/2463.240.206.0/2463.240.207.0/24