AS3561 209.223.144.0/20 CIDR and IP Range Summary.ASN: 3561 - CenturyLink Communications LLCHost Count: 4094Addressable IPs: 4096209.223.144.0/24209.223.145.0/24209.223.146.0/24209.223.147.0/24209.223.148.0/24209.223.149.0/24209.223.150.0/24209.223.151.0/24209.223.152.0/24209.223.153.0/24209.223.154.0/24209.223.155.0/24209.223.156.0/24209.223.157.0/24209.223.158.0/24209.223.159.0/24