146.102.9.153 is an IPv4 address owned by CESNET z.s.p.o. and located in Prague (Praha 3-Žižkov), Czechia
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~$ curl http://api.db-ip.com/v2/free/146.102.9.153
{
"ipAddress": "146.102.9.153",
"continentCode": "EU",
"continentName": "Europe",
"countryCode": "CZ",
"countryName": "Czechia",
"stateProv": "Hlavn\u00ed m\u011bsto Praha",
"city": "Prague (Praha 3-\u017di\u017ekov)",
}
~$ curl http://api.db-ip.com/v2/free/146.102.9.153/countryName
Czechia
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