AS7018 12.183.144.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.183.144.0/2412.183.145.0/2412.183.146.0/2412.183.147.0/2412.183.148.0/2412.183.149.0/2412.183.150.0/2412.183.151.0/24