AS7018 66.143.176.0/20 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 4094Addressable IPs: 409666.143.176.0/2466.143.177.0/2466.143.178.0/2466.143.179.0/2466.143.180.0/2466.143.181.0/2466.143.182.0/2466.143.183.0/2466.143.184.0/2466.143.185.0/2466.143.186.0/2466.143.187.0/2466.143.188.0/2466.143.189.0/2466.143.190.0/2466.143.191.0/24