31.211.38.155 or 31x211x38x155.static-business.tomsk.ertelecom.ru is an IPv4 address owned by JSC "ER-Telecom Holding" and located in Tomsk, Russia
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~$ curl http://api.db-ip.com/v2/free/31.211.38.155
{
"ipAddress": "31.211.38.155",
"continentCode": "EU",
"continentName": "Europe",
"countryCode": "RU",
"countryName": "Russia",
"stateProv": "Tomsk Oblast",
"city": "Tomsk",
}
~$ curl http://api.db-ip.com/v2/free/31.211.38.155/countryName
Russia
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.