37.131.190.3 or cust.dynamic.leunet.ch is an IPv4 address owned by Leunet AG and located in Frauenfeld, Switzerland
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~$ curl http://api.db-ip.com/v2/free/37.131.190.3
{
"ipAddress": "37.131.190.3",
"continentCode": "EU",
"continentName": "Europe",
"countryCode": "CH",
"countryName": "Switzerland",
"stateProv": "Thurgau",
"city": "Frauenfeld",
}
~$ curl http://api.db-ip.com/v2/free/37.131.190.3/countryName
Switzerland
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.