AS3561 165.193.64.0/21 CIDR and IP Range Summary.ASN: 3561 - CenturyLink Communications LLCHost Count: 2046Addressable IPs: 2048165.193.64.0/24165.193.65.0/24165.193.66.0/24165.193.67.0/24165.193.68.0/24165.193.69.0/24165.193.70.0/24165.193.71.0/24