AS209 72.166.120.0/21 CIDR and IP Range Summary.ASN: 209 - CenturyLink Communications LLCHost Count: 2046Addressable IPs: 204872.166.120.0/2472.166.121.0/2472.166.122.0/2472.166.123.0/2472.166.124.0/2472.166.125.0/2472.166.126.0/2472.166.127.0/24