AS3549 207.138.48.0/21 CIDR and IP Range Summary.ASN: 3549 - Level 3 Parent LLCHost Count: 2046Addressable IPs: 2048207.138.48.0/24207.138.49.0/24207.138.50.0/24207.138.51.0/24207.138.52.0/24207.138.53.0/24207.138.54.0/24207.138.55.0/24