AS3561 205.219.136.0/21 CIDR and IP Range Summary.ASN: 3561 - CenturyLink Communications LLCHost Count: 2046Addressable IPs: 2048205.219.136.0/24205.219.137.0/24205.219.138.0/24205.219.139.0/24205.219.140.0/24205.219.141.0/24205.219.142.0/24205.219.143.0/24