AS28509 187.252.144.0/21 CIDR and IP Range Summary.ASN: 28509 - Cablemas Telecomunicaciones SA de CVHost Count: 2046Addressable IPs: 2048187.252.144.0/24187.252.145.0/24187.252.146.0/24187.252.147.0/24187.252.148.0/24187.252.149.0/24187.252.150.0/24187.252.151.0/24