Our API returns ISO-2 country codes instead of country names. Here you can see it returning "US" for a google IP:
curl ipinfo.io/8.8.8.8/country
US
When displaying the country to the user you might want a full country name rather than the country code though. You can do this by using one of the mapping files from country.io. The country names JSON file has a mapping from codes to English names. Here are the first few lines from that file:
{
"BD": "Bangladesh",
"BE": "Belgium",
"BF": "Burkina Faso",
"BG": "Bulgaria",
"BA": "Bosnia and Herzegovina",
"BB": "Barbados",
"WF": "Wallis and Futuna",
"BL": "Saint Barthelemy",
"BM": "Bermuda",
"...": "..."
}
You can download and import that file into your project, and then use it to lookup the full country name given the country code from our API.