AS209 63.237.80.0/21 CIDR and IP Range Summary.ASN: 209 - CenturyLink Communications LLCHost Count: 2046Addressable IPs: 204863.237.80.0/2463.237.81.0/2463.237.82.0/2463.237.83.0/2463.237.84.0/2463.237.85.0/2463.237.86.0/2463.237.87.0/24