54.151.140.221 or ec2-54-151-140-221.ap-southeast-1.compute.amazonaws.com is an IPv4 address owned by Amazon Technologies Inc. and located in Singapore, Singapore
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~$ curl http://api.db-ip.com/v2/free/54.151.140.221
{
"ipAddress": "54.151.140.221",
"continentCode": "AS",
"continentName": "Asia",
"countryCode": "SG",
"countryName": "Singapore",
"city": "Singapore",
}
~$ curl http://api.db-ip.com/v2/free/54.151.140.221/countryName
Singapore
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.