AS3549 216.64.144.0/21 CIDR and IP Range Summary.ASN: 3549 - Level 3 Parent LLCHost Count: 2046Addressable IPs: 2048216.64.144.0/24216.64.145.0/24216.64.146.0/24216.64.147.0/24216.64.148.0/24216.64.149.0/24216.64.150.0/24216.64.151.0/24