AS7018 12.66.48.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.66.48.0/2412.66.49.0/2412.66.50.0/2412.66.51.0/2412.66.52.0/2412.66.53.0/2412.66.54.0/2412.66.55.0/24