91.199.38.0 is an IPv4 address owned by Shirak Technologies LLC and located in Yerevan (Kentron District), Armenia
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~$ curl http://api.db-ip.com/v2/free/91.199.38.0
{
    "ipAddress": "91.199.38.0",
	"continentCode": "AS",
	"continentName": "Asia",
	"countryCode": "AM",
	"countryName": "Armenia",
	"stateProv": "Yerevan",
	"city": "Yerevan (Kentron District)",
}
~$ curl http://api.db-ip.com/v2/free/91.199.38.0/countryName
Armenia
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.