45.159.37.104 or 104-37-159-45.customers.opticonn.it is an IPv4 address owned by Sirius S4 and located in Donnini, Italy
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~$ curl http://api.db-ip.com/v2/free/45.159.37.104
{
"ipAddress": "45.159.37.104",
"continentCode": "EU",
"continentName": "Europe",
"countryCode": "IT",
"countryName": "Italy",
"stateProv": "Tuscany",
"city": "Donnini",
}
~$ curl http://api.db-ip.com/v2/free/45.159.37.104/countryName
Italy
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.