AS7018 12.23.240.0/20 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 4094Addressable IPs: 409612.23.240.0/2412.23.241.0/2412.23.242.0/2412.23.243.0/2412.23.244.0/2412.23.245.0/2412.23.246.0/2412.23.247.0/2412.23.248.0/2412.23.249.0/2412.23.250.0/2412.23.251.0/2412.23.252.0/2412.23.253.0/2412.23.254.0/2412.23.255.0/24