AS7018 12.53.0.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.53.0.0/2412.53.1.0/2412.53.2.0/2412.53.3.0/2412.53.4.0/2412.53.5.0/2412.53.6.0/2412.53.7.0/24