57.66.164.251 is an IPv4 address owned by Orange Business Services-SITA and located in Frankfurt am Main, Germany
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~$ curl http://api.db-ip.com/v2/free/57.66.164.251
{
"ipAddress": "57.66.164.251",
"continentCode": "EU",
"continentName": "Europe",
"countryCode": "DE",
"countryName": "Germany",
"stateProv": "Hesse",
"city": "Frankfurt am Main",
}
~$ curl http://api.db-ip.com/v2/free/57.66.164.251/countryName
Germany
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.