213.137.111.210 or kg-210.ptt.rs is an IPv4 address owned by JP PTT Srbija and located in Belgrade (Savski Venac), Serbia
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~$ curl http://api.db-ip.com/v2/free/213.137.111.210
{
"ipAddress": "213.137.111.210",
"continentCode": "EU",
"continentName": "Europe",
"countryCode": "RS",
"countryName": "Serbia",
"stateProv": "Central Serbia",
"city": "Belgrade (Savski Venac)",
}
~$ curl http://api.db-ip.com/v2/free/213.137.111.210/countryName
Serbia
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.