AS7018 98.72.56.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204898.72.56.0/2498.72.57.0/2498.72.58.0/2498.72.59.0/2498.72.60.0/2498.72.61.0/2498.72.62.0/2498.72.63.0/24