AS7018 12.151.56.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.151.56.0/2412.151.57.0/2412.151.58.0/2412.151.59.0/2412.151.60.0/2412.151.61.0/2412.151.62.0/2412.151.63.0/24