AS3772 158.122.40.0/21 CIDR and IP Range Summary.ASN: 3772 - CETYS - Centro de Ensenanza Tecnica Y SuperiorHost Count: 2046Addressable IPs: 2048158.122.40.0/24158.122.41.0/24158.122.42.0/24158.122.43.0/24158.122.44.0/24158.122.45.0/24158.122.46.0/24158.122.47.0/24