AS7018 12.157.144.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.157.144.0/2412.157.145.0/2412.157.146.0/2412.157.147.0/2412.157.148.0/2412.157.149.0/2412.157.150.0/2412.157.151.0/24