AS209 209.180.16.0/21 CIDR and IP Range Summary.ASN: 209 - CenturyLink Communications LLCHost Count: 2046Addressable IPs: 2048209.180.16.0/24209.180.17.0/24209.180.18.0/24209.180.19.0/24209.180.20.0/24209.180.21.0/24209.180.22.0/24209.180.23.0/24