AS137697 117.91.192.0/21 CIDR and IP Range Summary.ASN: 137697 - CHINATELECOM JiangSu YangZhou IDC networkdescr: YangZhouJiangsu Province P.R.China.Host Count: 2046Addressable IPs: 2048117.91.192.0/24117.91.193.0/24117.91.194.0/24117.91.195.0/24117.91.196.0/24117.91.197.0/24117.91.198.0/24117.91.199.0/24