AS137689 117.61.240.0/21 CIDR and IP Range Summary.ASN: 137689 - IOT Jiangsu network Chinatelecom P.R.China.Host Count: 2046Addressable IPs: 2048117.61.240.0/24117.61.241.0/24117.61.242.0/24117.61.243.0/24117.61.244.0/24117.61.245.0/24117.61.246.0/24117.61.247.0/24