AS7018 12.28.144.0/20 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 4094Addressable IPs: 409612.28.144.0/2412.28.145.0/2412.28.146.0/2412.28.147.0/2412.28.148.0/2412.28.149.0/2412.28.150.0/2412.28.151.0/2412.28.152.0/2412.28.153.0/2412.28.154.0/2412.28.155.0/2412.28.156.0/2412.28.157.0/2412.28.158.0/2412.28.159.0/24