AS3561 216.39.104.0/21 CIDR and IP Range Summary.ASN: 3561 - CenturyLink Communications LLCHost Count: 2046Addressable IPs: 2048216.39.104.0/24216.39.105.0/24216.39.106.0/24216.39.107.0/24216.39.108.0/24216.39.109.0/24216.39.110.0/24216.39.111.0/24