147.228.242.0 is an IPv4 address owned by CESNET z.s.p.o. and located in Pilsen (Plzeň), Czechia
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~$ curl http://api.db-ip.com/v2/free/147.228.242.0
{
"ipAddress": "147.228.242.0",
"continentCode": "EU",
"continentName": "Europe",
"countryCode": "CZ",
"countryName": "Czechia",
"stateProv": "Plze\u0148 Region",
"city": "Pilsen (Plze\u0148)",
}
~$ curl http://api.db-ip.com/v2/free/147.228.242.0/countryName
Czechia
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.