AS1 8.3.56.0/21 CIDR and IP Range Summary.ASN: 1 - Level 3 Parent LLCHost Count: 2046Addressable IPs: 20488.3.56.0/248.3.57.0/248.3.58.0/248.3.59.0/248.3.60.0/248.3.61.0/248.3.62.0/248.3.63.0/24