AS3561 139.171.32.0/21 CIDR and IP Range Summary.ASN: 3561 - CenturyLink Communications LLCHost Count: 2046Addressable IPs: 2048139.171.32.0/24139.171.33.0/24139.171.34.0/24139.171.35.0/24139.171.36.0/24139.171.37.0/24139.171.38.0/24139.171.39.0/24