AS3561 208.137.8.0/21 CIDR and IP Range Summary.ASN: 3561 - CenturyLink Communications LLCHost Count: 2046Addressable IPs: 2048208.137.8.0/24208.137.9.0/24208.137.10.0/24208.137.11.0/24208.137.12.0/24208.137.13.0/24208.137.14.0/24208.137.15.0/24