AS7018 12.71.240.0/20 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 4094Addressable IPs: 409612.71.240.0/2412.71.241.0/2412.71.242.0/2412.71.243.0/2412.71.244.0/2412.71.245.0/2412.71.246.0/2412.71.247.0/2412.71.248.0/2412.71.249.0/2412.71.250.0/2412.71.251.0/2412.71.252.0/2412.71.253.0/2412.71.254.0/2412.71.255.0/24