77.243.20.199 is an IPv4 address owned by VSR mobile and located in Šajkaš, Serbia
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~$ curl http://api.db-ip.com/v2/free/77.243.20.199
{
"ipAddress": "77.243.20.199",
"continentCode": "EU",
"continentName": "Europe",
"countryCode": "RS",
"countryName": "Serbia",
"stateProv": "Vojvodina",
"city": "\u0160ajka\u0161",
}
~$ curl http://api.db-ip.com/v2/free/77.243.20.199/countryName
Serbia
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.