AS1 8.8.72.0/21 CIDR and IP Range Summary.ASN: 1 - Level 3 Parent LLCHost Count: 2046Addressable IPs: 20488.8.72.0/248.8.73.0/248.8.74.0/248.8.75.0/248.8.76.0/248.8.77.0/248.8.78.0/248.8.79.0/24