AS51819 37.113.72.0/21 CIDR and IP Range Summary.ASN: 51819 - JSC ER-Telecom HoldingHost Count: 2046Addressable IPs: 204837.113.72.0/2437.113.73.0/2437.113.74.0/2437.113.75.0/2437.113.76.0/2437.113.77.0/2437.113.78.0/2437.113.79.0/24