AS3561 66.100.128.0/20 CIDR and IP Range Summary.ASN: 3561 - CenturyLink Communications LLCHost Count: 4094Addressable IPs: 409666.100.128.0/2466.100.129.0/2466.100.130.0/2466.100.131.0/2466.100.132.0/2466.100.133.0/2466.100.134.0/2466.100.135.0/2466.100.136.0/2466.100.137.0/2466.100.138.0/2466.100.139.0/2466.100.140.0/2466.100.141.0/2466.100.142.0/2466.100.143.0/24