AS39138 31.172.0.0/20 CIDR and IP Range Summary.ASN: 39138 - rrbone GmbHHost Count: 4094Addressable IPs: 409631.172.0.0/2431.172.1.0/2431.172.2.0/2431.172.3.0/2431.172.4.0/2431.172.5.0/2431.172.6.0/2431.172.7.0/2431.172.8.0/2431.172.9.0/2431.172.10.0/2431.172.11.0/2431.172.12.0/2431.172.13.0/2431.172.14.0/2431.172.15.0/24