AS16273 46.228.128.0/21 CIDR and IP Range Summary.ASN: 16273 - WithSecure OyjHost Count: 2046Addressable IPs: 204846.228.128.0/2446.228.129.0/2446.228.130.0/2446.228.131.0/2446.228.132.0/2446.228.133.0/2446.228.134.0/2446.228.135.0/24