AS28509 189.221.168.0/21 CIDR and IP Range Summary.ASN: 28509 - Cablemas Telecomunicaciones SA de CVHost Count: 2046Addressable IPs: 2048189.221.168.0/24189.221.169.0/24189.221.170.0/24189.221.171.0/24189.221.172.0/24189.221.173.0/24189.221.174.0/24189.221.175.0/24