AS3448 184.128.0.0/12 CIDR and IP Range Summary.ASN: 3448 - AT&T Mobility LLCHost Count: 1048574Addressable IPs: 1048576184.128.0.0/16184.129.0.0/16184.130.0.0/16184.131.0.0/16184.132.0.0/16184.133.0.0/16184.134.0.0/16184.135.0.0/16184.136.0.0/16184.137.0.0/16184.138.0.0/16184.139.0.0/16184.140.0.0/16184.141.0.0/16184.142.0.0/16184.143.0.0/16