AS3561 66.100.96.0/21 CIDR and IP Range Summary.ASN: 3561 - CenturyLink Communications LLCHost Count: 2046Addressable IPs: 204866.100.96.0/2466.100.97.0/2466.100.98.0/2466.100.99.0/2466.100.100.0/2466.100.101.0/2466.100.102.0/2466.100.103.0/24