AS12389 77.51.120.0/21 CIDR and IP Range Summary.ASN: 12389 - PJSC RostelecomHost Count: 2046Addressable IPs: 204877.51.120.0/2477.51.121.0/2477.51.122.0/2477.51.123.0/2477.51.124.0/2477.51.125.0/2477.51.126.0/2477.51.127.0/24