AS7018 12.37.48.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.37.48.0/2412.37.49.0/2412.37.50.0/2412.37.51.0/2412.37.52.0/2412.37.53.0/2412.37.54.0/2412.37.55.0/24