AS7018 12.193.16.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.193.16.0/2412.193.17.0/2412.193.18.0/2412.193.19.0/2412.193.20.0/2412.193.21.0/2412.193.22.0/2412.193.23.0/24