AS7018 12.129.176.0/20 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 4094Addressable IPs: 409612.129.176.0/2412.129.177.0/2412.129.178.0/2412.129.179.0/2412.129.180.0/2412.129.181.0/2412.129.182.0/2412.129.183.0/2412.129.184.0/2412.129.185.0/2412.129.186.0/2412.129.187.0/2412.129.188.0/2412.129.189.0/2412.129.190.0/2412.129.191.0/24