117.31.156.13 or 13.156.31.117.broad.nd.fj.dynamic.163data.com.cn is an IPv4 address owned by Chinanet and located in Ningde, China
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~$ curl http://api.db-ip.com/v2/free/117.31.156.13
{
"ipAddress": "117.31.156.13",
"continentCode": "AS",
"continentName": "Asia",
"countryCode": "CN",
"countryName": "China",
"stateProv": "Fujian",
"city": "Ningde",
}
~$ curl http://api.db-ip.com/v2/free/117.31.156.13/countryName
China
The free API is limited to 1,000 daily requests and returns city level location data only, if you require larger query volumes or more information such as latitude/longitude, ISP details or threat level assessment, please see our commercial offers.