AS7018 12.172.48.0/20 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 4094Addressable IPs: 409612.172.48.0/2412.172.49.0/2412.172.50.0/2412.172.51.0/2412.172.52.0/2412.172.53.0/2412.172.54.0/2412.172.55.0/2412.172.56.0/2412.172.57.0/2412.172.58.0/2412.172.59.0/2412.172.60.0/2412.172.61.0/2412.172.62.0/2412.172.63.0/24