AS12772 188.133.128.0/21 CIDR and IP Range Summary.ASN: 12772 - JSC ER-Telecom HoldingHost Count: 2046Addressable IPs: 2048188.133.128.0/24188.133.129.0/24188.133.130.0/24188.133.131.0/24188.133.132.0/24188.133.133.0/24188.133.134.0/24188.133.135.0/24