AS7018 12.183.240.0/20 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 4094Addressable IPs: 409612.183.240.0/2412.183.241.0/2412.183.242.0/2412.183.243.0/2412.183.244.0/2412.183.245.0/2412.183.246.0/2412.183.247.0/2412.183.248.0/2412.183.249.0/2412.183.250.0/2412.183.251.0/2412.183.252.0/2412.183.253.0/2412.183.254.0/2412.183.255.0/24