AS15744 83.230.80.0/21 CIDR and IP Range Summary.ASN: 15744 - Silesian University of Technology Computer CentreHost Count: 2046Addressable IPs: 204883.230.80.0/2483.230.81.0/2483.230.82.0/2483.230.83.0/2483.230.84.0/2483.230.85.0/2483.230.86.0/2483.230.87.0/24