Ip to location with country code, currency code & currency name, fast response, unlimited requests.
Hirak IP to Country API is a free Geocoding API that requires apiKey authentication, is served over HTTPS and has unconfirmed CORS support.

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Geocode an address, validate an email, track a flight or pull stock data with one account, one dashboard and one API key.
API for accessing geo-data of Hong Kong
Aggregate services of IBGE (Brazilian Institute of Geography and Statistics)
Yes. The Hirak IP to Country API is listed in the Geocoding category of the public-apis directory, which only includes APIs that are free or have a free tier. Check its documentation for rate limits and paid plans.
Yes. The Hirak IP to Country API uses apiKey authentication, so you need to register for credentials before making requests.
CORS support for the Hirak IP to Country API is unknown. Test a request from the browser, and fall back to a server-side call if it is blocked.
Yes. The Hirak IP to Country API is served over HTTPS, so it's safe to use in production.