AS3303 212.243.72.0/21 CIDR and IP Range Summary.ASN: 3303 - Swisscom (Schweiz) AGHost Count: 2046Addressable IPs: 2048212.243.72.0/24212.243.73.0/24212.243.74.0/24212.243.75.0/24212.243.76.0/24212.243.77.0/24212.243.78.0/24212.243.79.0/24