AS7018 12.21.80.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.21.80.0/2412.21.81.0/2412.21.82.0/2412.21.83.0/2412.21.84.0/2412.21.85.0/2412.21.86.0/2412.21.87.0/24