AS3561 64.75.0.0/21 CIDR and IP Range Summary.ASN: 3561 - CenturyLink Communications LLCHost Count: 2046Addressable IPs: 204864.75.0.0/2464.75.1.0/2464.75.2.0/2464.75.3.0/2464.75.4.0/2464.75.5.0/2464.75.6.0/2464.75.7.0/24