AS7018 12.24.136.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.24.136.0/2412.24.137.0/2412.24.138.0/2412.24.139.0/2412.24.140.0/2412.24.141.0/2412.24.142.0/2412.24.143.0/24