AS4538 121.193.208.0/21 CIDR and IP Range Summary.ASN: 4538 - Asia Pacific Network Information CentreHost Count: 2046Addressable IPs: 2048121.193.208.0/24121.193.209.0/24121.193.210.0/24121.193.211.0/24121.193.212.0/24121.193.213.0/24121.193.214.0/24121.193.215.0/24