AS7018 12.53.144.0/20 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 4094Addressable IPs: 409612.53.144.0/2412.53.145.0/2412.53.146.0/2412.53.147.0/2412.53.148.0/2412.53.149.0/2412.53.150.0/2412.53.151.0/2412.53.152.0/2412.53.153.0/2412.53.154.0/2412.53.155.0/2412.53.156.0/2412.53.157.0/2412.53.158.0/2412.53.159.0/24