AS3303 138.188.160.0/21 CIDR and IP Range Summary.ASN: 3303 - Swisscom (Schweiz) AGHost Count: 2046Addressable IPs: 2048138.188.160.0/24138.188.161.0/24138.188.162.0/24138.188.163.0/24138.188.164.0/24138.188.165.0/24138.188.166.0/24138.188.167.0/24