AS7018 12.15.128.0/20 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 4094Addressable IPs: 409612.15.128.0/2412.15.129.0/2412.15.130.0/2412.15.131.0/2412.15.132.0/2412.15.133.0/2412.15.134.0/2412.15.135.0/2412.15.136.0/2412.15.137.0/2412.15.138.0/2412.15.139.0/2412.15.140.0/2412.15.141.0/2412.15.142.0/2412.15.143.0/24