AS51906 31.204.112.0/21 CIDR and IP Range Summary.ASN: 51906 - recast IT GmbH & Co. KGHost Count: 2046Addressable IPs: 204831.204.112.0/2431.204.113.0/2431.204.114.0/2431.204.115.0/2431.204.116.0/2431.204.117.0/2431.204.118.0/2431.204.119.0/24