39.166.186.28 is an IPv4 address owned by China Mobile and located in Guangzhou, China
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~$ curl http://api.db-ip.com/v2/free/39.166.186.28
{
"ipAddress": "39.166.186.28",
"continentCode": "AS",
"continentName": "Asia",
"countryCode": "CN",
"countryName": "China",
"stateProv": "Guangdong",
"city": "Guangzhou",
}
~$ curl http://api.db-ip.com/v2/free/39.166.186.28/countryName
China
The free API is limited to 500 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.