AS7018 12.236.144.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.236.144.0/2412.236.145.0/2412.236.146.0/2412.236.147.0/2412.236.148.0/2412.236.149.0/2412.236.150.0/2412.236.151.0/24