AS3561 216.227.200.0/21 CIDR and IP Range Summary.ASN: 3561 - CenturyLink Communications LLCHost Count: 2046Addressable IPs: 2048216.227.200.0/24216.227.201.0/24216.227.202.0/24216.227.203.0/24216.227.204.0/24216.227.205.0/24216.227.206.0/24216.227.207.0/24