AS7018 12.17.144.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.17.144.0/2412.17.145.0/2412.17.146.0/2412.17.147.0/2412.17.148.0/2412.17.149.0/2412.17.150.0/2412.17.151.0/24