AS7018 68.21.96.0/20 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 4094Addressable IPs: 409668.21.96.0/2468.21.97.0/2468.21.98.0/2468.21.99.0/2468.21.100.0/2468.21.101.0/2468.21.102.0/2468.21.103.0/2468.21.104.0/2468.21.105.0/2468.21.106.0/2468.21.107.0/2468.21.108.0/2468.21.109.0/2468.21.110.0/2468.21.111.0/24