AS209 204.133.56.0/21 CIDR and IP Range Summary.ASN: 209 - CenturyLink Communications LLCHost Count: 2046Addressable IPs: 2048204.133.56.0/24204.133.57.0/24204.133.58.0/24204.133.59.0/24204.133.60.0/24204.133.61.0/24204.133.62.0/24204.133.63.0/24