AS3561 64.28.88.0/21 CIDR and IP Range Summary.ASN: 3561 - CenturyLink Communications LLCHost Count: 2046Addressable IPs: 204864.28.88.0/2464.28.89.0/2464.28.90.0/2464.28.91.0/2464.28.92.0/2464.28.93.0/2464.28.94.0/2464.28.95.0/24