AS3561 205.216.56.0/21 CIDR and IP Range Summary.ASN: 3561 - CenturyLink Communications LLCHost Count: 2046Addressable IPs: 2048205.216.56.0/24205.216.57.0/24205.216.58.0/24205.216.59.0/24205.216.60.0/24205.216.61.0/24205.216.62.0/24205.216.63.0/24