AS28512 187.253.144.0/21 CIDR and IP Range Summary.ASN: 28512 - Cablemas Telecomunicaciones SA de CVHost Count: 2046Addressable IPs: 2048187.253.144.0/24187.253.145.0/24187.253.146.0/24187.253.147.0/24187.253.148.0/24187.253.149.0/24187.253.150.0/24187.253.151.0/24