AS7018 12.144.152.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.144.152.0/2412.144.153.0/2412.144.154.0/2412.144.155.0/2412.144.156.0/2412.144.157.0/2412.144.158.0/2412.144.159.0/24