AS3561 137.183.80.0/20 CIDR and IP Range Summary.ASN: 3561 - CenturyLink Communications LLCHost Count: 4094Addressable IPs: 4096137.183.80.0/24137.183.81.0/24137.183.82.0/24137.183.83.0/24137.183.84.0/24137.183.85.0/24137.183.86.0/24137.183.87.0/24137.183.88.0/24137.183.89.0/24137.183.90.0/24137.183.91.0/24137.183.92.0/24137.183.93.0/24137.183.94.0/24137.183.95.0/24