AS3561 207.1.0.0/21 CIDR and IP Range Summary.ASN: 3561 - CenturyLink Communications LLCHost Count: 2046Addressable IPs: 2048207.1.0.0/24207.1.1.0/24207.1.2.0/24207.1.3.0/24207.1.4.0/24207.1.5.0/24207.1.6.0/24207.1.7.0/24