AS3561 206.31.0.0/20 CIDR and IP Range Summary.ASN: 3561 - CenturyLink Communications LLCHost Count: 4094Addressable IPs: 4096206.31.0.0/24206.31.1.0/24206.31.2.0/24206.31.3.0/24206.31.4.0/24206.31.5.0/24206.31.6.0/24206.31.7.0/24206.31.8.0/24206.31.9.0/24206.31.10.0/24206.31.11.0/24206.31.12.0/24206.31.13.0/24206.31.14.0/24206.31.15.0/24