AS7018 12.17.248.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.17.248.0/2412.17.249.0/2412.17.250.0/2412.17.251.0/2412.17.252.0/2412.17.253.0/2412.17.254.0/2412.17.255.0/24