AS1221 139.163.144.0/20 CIDR and IP Range Summary.ASN: 1221 - Asia Pacific Network Information CentreHost Count: 4094Addressable IPs: 4096139.163.144.0/24139.163.145.0/24139.163.146.0/24139.163.147.0/24139.163.148.0/24139.163.149.0/24139.163.150.0/24139.163.151.0/24139.163.152.0/24139.163.153.0/24139.163.154.0/24139.163.155.0/24139.163.156.0/24139.163.157.0/24139.163.158.0/24139.163.159.0/24