AS209 71.1.72.0/21 CIDR and IP Range Summary.ASN: 209 - CenturyLink Communications LLCHost Count: 2046Addressable IPs: 204871.1.72.0/2471.1.73.0/2471.1.74.0/2471.1.75.0/2471.1.76.0/2471.1.77.0/2471.1.78.0/2471.1.79.0/24