AS3561 216.33.80.0/21 CIDR and IP Range Summary.ASN: 3561 - CenturyLink Communications LLCHost Count: 2046Addressable IPs: 2048216.33.80.0/24216.33.81.0/24216.33.82.0/24216.33.83.0/24216.33.84.0/24216.33.85.0/24216.33.86.0/24216.33.87.0/24