AS3561 208.136.104.0/21 CIDR and IP Range Summary.ASN: 3561 - CenturyLink Communications LLCHost Count: 2046Addressable IPs: 2048208.136.104.0/24208.136.105.0/24208.136.106.0/24208.136.107.0/24208.136.108.0/24208.136.109.0/24208.136.110.0/24208.136.111.0/24