AS56981 78.139.216.0/21 CIDR and IP Range Summary.ASN: 56981 - JSC ER-Telecom HoldingHost Count: 2046Addressable IPs: 204878.139.216.0/2478.139.217.0/2478.139.218.0/2478.139.219.0/2478.139.220.0/2478.139.221.0/2478.139.222.0/2478.139.223.0/24