AS7018 12.71.152.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.71.152.0/2412.71.153.0/2412.71.154.0/2412.71.155.0/2412.71.156.0/2412.71.157.0/2412.71.158.0/2412.71.159.0/24