138.191.188.4 is an IPv4 address owned by Die Schweizerische Post AG and located in Zollikofen, Switzerland
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~$ curl http://api.db-ip.com/v2/free/138.191.188.4
{
"ipAddress": "138.191.188.4",
"continentCode": "EU",
"continentName": "Europe",
"countryCode": "CH",
"countryName": "Switzerland",
"stateProv": "Bern",
"city": "Zollikofen",
}
~$ curl http://api.db-ip.com/v2/free/138.191.188.4/countryName
Switzerland
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.