~$ curl http://api.db-ip.com/v2/free/114.196.2.151
{
    "ipAddress": "114.196.2.151",
	"continentCode": "AS",
	"continentName": "Asia",
	"countryCode": "CN",
	"countryName": "China",
	"stateProv": "Heilongjiang",
	"city": "Daqing (Sartu Qu)",
}

~$ curl http://api.db-ip.com/v2/free/114.196.2.151/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.