AS1221 155.144.152.0/21 CIDR and IP Range Summary.ASN: 1221 - Asia Pacific Network Information CentreHost Count: 2046Addressable IPs: 2048155.144.152.0/24155.144.153.0/24155.144.154.0/24155.144.155.0/24155.144.156.0/24155.144.157.0/24155.144.158.0/24155.144.159.0/24