AS1 8.9.72.0/21 CIDR and IP Range Summary.ASN: 1 - Level 3 Parent LLCHost Count: 2046Addressable IPs: 20488.9.72.0/248.9.73.0/248.9.74.0/248.9.75.0/248.9.76.0/248.9.77.0/248.9.78.0/248.9.79.0/24