AS17638 221.238.0.0/19 CIDR and IP Range Summary.ASN: 17638 - ASN for TIANJIN Provincial Net of CTHost Count: 8190Addressable IPs: 8192221.238.0.0/24221.238.1.0/24221.238.2.0/24221.238.3.0/24221.238.4.0/24221.238.5.0/24221.238.6.0/24221.238.7.0/24221.238.8.0/24221.238.9.0/24221.238.10.0/24221.238.11.0/24221.238.12.0/24221.238.13.0/24221.238.14.0/24221.238.15.0/24221.238.16.0/24221.238.17.0/24221.238.18.0/24221.238.19.0/24221.238.20.0/24221.238.21.0/24221.238.22.0/24221.238.23.0/24221.238.24.0/24221.238.25.0/24221.238.26.0/24221.238.27.0/24221.238.28.0/24221.238.29.0/24221.238.30.0/24221.238.31.0/24