AS15943 31.172.104.0/21 CIDR and IP Range Summary.ASN: 15943 - wilhelm.tel GmbHHost Count: 2046Addressable IPs: 204831.172.104.0/2431.172.105.0/2431.172.106.0/2431.172.107.0/2431.172.108.0/2431.172.109.0/2431.172.110.0/2431.172.111.0/24