115.187.91.243 is an IPv4 address owned by bmdnet and located in Ulaanbaatar (Khoroo 2), Mongolia
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~$ curl http://api.db-ip.com/v2/free/115.187.91.243
{
"ipAddress": "115.187.91.243",
"continentCode": "AS",
"continentName": "Asia",
"countryCode": "MN",
"countryName": "Mongolia",
"stateProv": "Ulaanbaatar",
"city": "Ulaanbaatar (Khoroo 2)",
}
~$ curl http://api.db-ip.com/v2/free/115.187.91.243/countryName
Mongolia
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.