AS3561 207.0.248.0/21 CIDR and IP Range Summary.ASN: 3561 - CenturyLink Communications LLCHost Count: 2046Addressable IPs: 2048207.0.248.0/24207.0.249.0/24207.0.250.0/24207.0.251.0/24207.0.252.0/24207.0.253.0/24207.0.254.0/24207.0.255.0/24