AS56339 163.5.16.0/21 CIDR and IP Range Summary.ASN: 56339 - Ionis Group - Ionis Schools of Technology and Management SASHost Count: 2046Addressable IPs: 2048163.5.16.0/24163.5.17.0/24163.5.18.0/24163.5.19.0/24163.5.20.0/24163.5.21.0/24163.5.22.0/24163.5.23.0/24