AS7018 12.237.8.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.237.8.0/2412.237.9.0/2412.237.10.0/2412.237.11.0/2412.237.12.0/2412.237.13.0/2412.237.14.0/2412.237.15.0/24