AS7018 12.147.136.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.147.136.0/2412.147.137.0/2412.147.138.0/2412.147.139.0/2412.147.140.0/2412.147.141.0/2412.147.142.0/2412.147.143.0/24