AS1221 121.216.0.0/13 CIDR and IP Range Summary.ASN: 1221 - Asia Pacific Network Information CentreHost Count: 524286Addressable IPs: 524288121.216.0.0/16121.216.0.0/16121.216.0.0/16121.216.0.0/16121.216.0.0/16121.216.0.0/16121.216.0.0/16121.216.0.0/16