AS28509 187.253.240.0/21 CIDR and IP Range Summary.ASN: 28509 - Cablemas Telecomunicaciones SA de CVHost Count: 2046Addressable IPs: 2048187.253.240.0/24187.253.241.0/24187.253.242.0/24187.253.243.0/24187.253.244.0/24187.253.245.0/24187.253.246.0/24187.253.247.0/24