AS209 71.53.40.0/21 CIDR and IP Range Summary.ASN: 209 - CenturyLink Communications LLCHost Count: 2046Addressable IPs: 204871.53.40.0/2471.53.41.0/2471.53.42.0/2471.53.43.0/2471.53.44.0/2471.53.45.0/2471.53.46.0/2471.53.47.0/24