AS28509 187.253.152.0/21 CIDR and IP Range Summary.ASN: 28509 - Cablemas Telecomunicaciones SA de CVHost Count: 2046Addressable IPs: 2048187.253.152.0/24187.253.153.0/24187.253.154.0/24187.253.155.0/24187.253.156.0/24187.253.157.0/24187.253.158.0/24187.253.159.0/24