5.104.21.187 or 5-104-21-187.members.slavicin.unart.cz is an IPv4 address owned by UnArtel s.r.o. and located in Pitín, Czechia
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~$ curl http://api.db-ip.com/v2/free/5.104.21.187
{
"ipAddress": "5.104.21.187",
"continentCode": "EU",
"continentName": "Europe",
"countryCode": "CZ",
"countryName": "Czechia",
"stateProv": "Zl\u00edn",
"city": "Pit\u00edn",
}
~$ curl http://api.db-ip.com/v2/free/5.104.21.187/countryName
Czechia
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.