AS7018 12.107.136.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.107.136.0/2412.107.137.0/2412.107.138.0/2412.107.139.0/2412.107.140.0/2412.107.141.0/2412.107.142.0/2412.107.143.0/24