AS7018 12.157.56.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.157.56.0/2412.157.57.0/2412.157.58.0/2412.157.59.0/2412.157.60.0/2412.157.61.0/2412.157.62.0/2412.157.63.0/24