AS131932 157.72.152.0/21 CIDR and IP Range Summary.ASN: 131932 - JR East Information Systems CompanyHost Count: 2046Addressable IPs: 2048157.72.152.0/24157.72.153.0/24157.72.154.0/24157.72.155.0/24157.72.156.0/24157.72.157.0/24157.72.158.0/24157.72.159.0/24