133.92.10.0 is an IPv4 address owned by Kagawa University and located in Chiyoda City, Japan
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~$ curl http://api.db-ip.com/v2/free/133.92.10.0
{
    "ipAddress": "133.92.10.0",
	"continentCode": "AS",
	"continentName": "Asia",
	"countryCode": "JP",
	"countryName": "Japan",
	"stateProv": "Tokyo",
	"city": "Chiyoda City",
}
~$ curl http://api.db-ip.com/v2/free/133.92.10.0/countryName
Japan
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.