176.40.231.21 or host-176-40-231-21.reverse.superonline.net is an IPv4 address owned by Turkcell Internet and located in Çekmeköy, Turkey
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~$ curl http://api.db-ip.com/v2/free/176.40.231.21
{
"ipAddress": "176.40.231.21",
"continentCode": "AS",
"continentName": "Asia",
"countryCode": "TR",
"countryName": "Turkey",
"stateProv": "Istanbul",
"city": "\u00c7ekmek\u00f6y",
}
~$ curl http://api.db-ip.com/v2/free/176.40.231.21/countryName
Turkey
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.