AS3561 216.224.104.0/21 CIDR and IP Range Summary.ASN: 3561 - CenturyLink Communications LLCHost Count: 2046Addressable IPs: 2048216.224.104.0/24216.224.105.0/24216.224.106.0/24216.224.107.0/24216.224.108.0/24216.224.109.0/24216.224.110.0/24216.224.111.0/24