AS3549 216.54.136.0/21 CIDR and IP Range Summary.ASN: 3549 - Level 3 Parent LLCHost Count: 2046Addressable IPs: 2048216.54.136.0/24216.54.137.0/24216.54.138.0/24216.54.139.0/24216.54.140.0/24216.54.141.0/24216.54.142.0/24216.54.143.0/24