AS3303 212.243.0.0/21 CIDR and IP Range Summary.ASN: 3303 - Swisscom (Schweiz) AGHost Count: 2046Addressable IPs: 2048212.243.0.0/24212.243.1.0/24212.243.2.0/24212.243.3.0/24212.243.4.0/24212.243.5.0/24212.243.6.0/24212.243.7.0/24