AS3561 205.139.128.0/21 CIDR and IP Range Summary.ASN: 3561 - CenturyLink Communications LLCHost Count: 2046Addressable IPs: 2048205.139.128.0/24205.139.129.0/24205.139.130.0/24205.139.131.0/24205.139.132.0/24205.139.133.0/24205.139.134.0/24205.139.135.0/24