2605:e740:ff04:: is an IPv6 address owned by E Shells Inc and located in Chiyoda, Japan
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~$ curl http://api.db-ip.com/v2/free/2605:e740:ff04::
{
    "ipAddress": "2605:e740:ff04::",
	"continentCode": "AS",
	"continentName": "Asia",
	"countryCode": "JP",
	"countryName": "Japan",
	"stateProv": "Tokyo",
	"city": "Chiyoda",
}
~$ curl http://api.db-ip.com/v2/free/2605:e740:ff04::/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.