AS7018 99.51.88.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204899.51.88.0/2499.51.89.0/2499.51.90.0/2499.51.91.0/2499.51.92.0/2499.51.93.0/2499.51.94.0/2499.51.95.0/24