AS3561 209.27.0.0/21 CIDR and IP Range Summary.ASN: 3561 - CenturyLink Communications LLCHost Count: 2046Addressable IPs: 2048209.27.0.0/24209.27.1.0/24209.27.2.0/24209.27.3.0/24209.27.4.0/24209.27.5.0/24209.27.6.0/24209.27.7.0/24