AS3549 206.15.72.0/21 CIDR and IP Range Summary.ASN: 3549 - Level 3 Parent LLCHost Count: 2046Addressable IPs: 2048206.15.72.0/24206.15.73.0/24206.15.74.0/24206.15.75.0/24206.15.76.0/24206.15.77.0/24206.15.78.0/24206.15.79.0/24