AS3561 165.193.136.0/21 CIDR and IP Range Summary.ASN: 3561 - CenturyLink Communications LLCHost Count: 2046Addressable IPs: 2048165.193.136.0/24165.193.137.0/24165.193.138.0/24165.193.139.0/24165.193.140.0/24165.193.141.0/24165.193.142.0/24165.193.143.0/24