AS135357 156.254.64.0/21 CIDR and IP Range Summary.ASN: 135357 - Shenzhen Katherine Heng Technology Information CoHost Count: 2046Addressable IPs: 2048156.254.64.0/24156.254.65.0/24156.254.66.0/24156.254.67.0/24156.254.68.0/24156.254.69.0/24156.254.70.0/24156.254.71.0/24