AS7018 12.131.176.0/20 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 4094Addressable IPs: 409612.131.176.0/2412.131.177.0/2412.131.178.0/2412.131.179.0/2412.131.180.0/2412.131.181.0/2412.131.182.0/2412.131.183.0/2412.131.184.0/2412.131.185.0/2412.131.186.0/2412.131.187.0/2412.131.188.0/2412.131.189.0/2412.131.190.0/2412.131.191.0/24