AS7018 12.31.176.0/20 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 4094Addressable IPs: 409612.31.176.0/2412.31.177.0/2412.31.178.0/2412.31.179.0/2412.31.180.0/2412.31.181.0/2412.31.182.0/2412.31.183.0/2412.31.184.0/2412.31.185.0/2412.31.186.0/2412.31.187.0/2412.31.188.0/2412.31.189.0/2412.31.190.0/2412.31.191.0/24