AS7018 12.129.240.0/20 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 4094Addressable IPs: 409612.129.240.0/2412.129.241.0/2412.129.242.0/2412.129.243.0/2412.129.244.0/2412.129.245.0/2412.129.246.0/2412.129.247.0/2412.129.248.0/2412.129.249.0/2412.129.250.0/2412.129.251.0/2412.129.252.0/2412.129.253.0/2412.129.254.0/2412.129.255.0/24