61.21.36.213 or 61-21-36-213.rev.home.ne.jp is an IPv4 address owned by JCOM Co., Ltd. and located in Tokorozawa, Japan
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~$ curl http://api.db-ip.com/v2/free/61.21.36.213
{
"ipAddress": "61.21.36.213",
"continentCode": "AS",
"continentName": "Asia",
"countryCode": "JP",
"countryName": "Japan",
"stateProv": "Saitama",
"city": "Tokorozawa",
}
~$ curl http://api.db-ip.com/v2/free/61.21.36.213/countryName
Japan
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.