AS7018 12.71.200.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.71.200.0/2412.71.201.0/2412.71.202.0/2412.71.203.0/2412.71.204.0/2412.71.205.0/2412.71.206.0/2412.71.207.0/24