AS7018 12.236.16.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.236.16.0/2412.236.17.0/2412.236.18.0/2412.236.19.0/2412.236.20.0/2412.236.21.0/2412.236.22.0/2412.236.23.0/24