AS3561 167.216.136.0/21 CIDR and IP Range Summary.ASN: 3561 - CenturyLink Communications LLCHost Count: 2046Addressable IPs: 2048167.216.136.0/24167.216.137.0/24167.216.138.0/24167.216.139.0/24167.216.140.0/24167.216.141.0/24167.216.142.0/24167.216.143.0/24