AS7018 72.156.192.0/19 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 8190Addressable IPs: 819272.156.192.0/2472.156.193.0/2472.156.194.0/2472.156.195.0/2472.156.196.0/2472.156.197.0/2472.156.198.0/2472.156.199.0/2472.156.200.0/2472.156.201.0/2472.156.202.0/2472.156.203.0/2472.156.204.0/2472.156.205.0/2472.156.206.0/2472.156.207.0/2472.156.208.0/2472.156.209.0/2472.156.210.0/2472.156.211.0/2472.156.212.0/2472.156.213.0/2472.156.214.0/2472.156.215.0/2472.156.216.0/2472.156.217.0/2472.156.218.0/2472.156.219.0/2472.156.220.0/2472.156.221.0/2472.156.222.0/2472.156.223.0/24