AS7018 12.139.8.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.139.8.0/2412.139.9.0/2412.139.10.0/2412.139.11.0/2412.139.12.0/2412.139.13.0/2412.139.14.0/2412.139.15.0/24