91.230.216.0 or 91-230-216-0.216.230.91.in-addr.arpa is an IPv4 address owned by Tehkasa UAB and located in Riga, Latvia
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~$ curl http://api.db-ip.com/v2/free/91.230.216.0
{
"ipAddress": "91.230.216.0",
"continentCode": "EU",
"continentName": "Europe",
"countryCode": "LV",
"countryName": "Latvia",
"stateProv": "Riga",
"city": "Riga",
}
~$ curl http://api.db-ip.com/v2/free/91.230.216.0/countryName
Latvia
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.