AS7018 12.220.240.0/20 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 4094Addressable IPs: 409612.220.240.0/2412.220.241.0/2412.220.242.0/2412.220.243.0/2412.220.244.0/2412.220.245.0/2412.220.246.0/2412.220.247.0/2412.220.248.0/2412.220.249.0/2412.220.250.0/2412.220.251.0/2412.220.252.0/2412.220.253.0/2412.220.254.0/2412.220.255.0/24