AS3561 216.35.248.0/21 CIDR and IP Range Summary.ASN: 3561 - CenturyLink Communications LLCHost Count: 2046Addressable IPs: 2048216.35.248.0/24216.35.249.0/24216.35.250.0/24216.35.251.0/24216.35.252.0/24216.35.253.0/24216.35.254.0/24216.35.255.0/24