AS7018 74.183.128.0/20 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 4094Addressable IPs: 409674.183.128.0/2474.183.129.0/2474.183.130.0/2474.183.131.0/2474.183.132.0/2474.183.133.0/2474.183.134.0/2474.183.135.0/2474.183.136.0/2474.183.137.0/2474.183.138.0/2474.183.139.0/2474.183.140.0/2474.183.141.0/2474.183.142.0/2474.183.143.0/24