AS7018 12.180.136.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.180.136.0/2412.180.137.0/2412.180.138.0/2412.180.139.0/2412.180.140.0/2412.180.141.0/2412.180.142.0/2412.180.143.0/24