AS7018 12.187.168.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.187.168.0/2412.187.169.0/2412.187.170.0/2412.187.171.0/2412.187.172.0/2412.187.173.0/2412.187.174.0/2412.187.175.0/24