AS7018 12.50.40.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.50.40.0/2412.50.41.0/2412.50.42.0/2412.50.43.0/2412.50.44.0/2412.50.45.0/2412.50.46.0/2412.50.47.0/24