AS209 65.121.16.0/21 CIDR and IP Range Summary.ASN: 209 - CenturyLink Communications LLCHost Count: 2046Addressable IPs: 204865.121.16.0/2465.121.17.0/2465.121.18.0/2465.121.19.0/2465.121.20.0/2465.121.21.0/2465.121.22.0/2465.121.23.0/24