AS7018 12.52.40.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.52.40.0/2412.52.41.0/2412.52.42.0/2412.52.43.0/2412.52.44.0/2412.52.45.0/2412.52.46.0/2412.52.47.0/24