AS131921 180.131.136.0/21 CIDR and IP Range Summary.ASN: 131921 - GMOCL GMO GlobalSign Holdings K.K.Host Count: 2046Addressable IPs: 2048180.131.136.0/24180.131.137.0/24180.131.138.0/24180.131.139.0/24180.131.140.0/24180.131.141.0/24180.131.142.0/24180.131.143.0/24