AS7018 12.216.144.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.216.144.0/2412.216.145.0/2412.216.146.0/2412.216.147.0/2412.216.148.0/2412.216.149.0/2412.216.150.0/2412.216.151.0/24