AS3561 204.188.128.0/21 CIDR and IP Range Summary.ASN: 3561 - CenturyLink Communications LLCHost Count: 2046Addressable IPs: 2048204.188.128.0/24204.188.129.0/24204.188.130.0/24204.188.131.0/24204.188.132.0/24204.188.133.0/24204.188.134.0/24204.188.135.0/24