AS12772 188.133.144.0/21 CIDR and IP Range Summary.ASN: 12772 - JSC ER-Telecom HoldingHost Count: 2046Addressable IPs: 2048188.133.144.0/24188.133.145.0/24188.133.146.0/24188.133.147.0/24188.133.148.0/24188.133.149.0/24188.133.150.0/24188.133.151.0/24