AS7018 12.132.136.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.132.136.0/2412.132.137.0/2412.132.138.0/2412.132.139.0/2412.132.140.0/2412.132.141.0/2412.132.142.0/2412.132.143.0/24