IPstack

This module allows site developers to use IPstack API (former FreeGeoIP). This API use for locate and identify website visitors by IP address. Support HTTPS. Support caching.

You need obtain API Access Key from ipstack.com and save the key to module configuration. After that you can test getting of information using the module testing page.

Support testing page like /admin/config/system/ipstack/test/[IP address] for 7.x version and /admin/config/system/ipstack/test/page?ip=[IP address] for 8.x version.

Usage:

Drupal 8

Use Dependency Injection for getting ipstack service or use
\Drupal::service('ipstack').

$ip = '111.222.333.444';

$ipstack = \Drupal::service('ipstack');
$ipstack->setIp($ip)
  ->setFields('country_code')
  ->setOutput('json');
$data = $ipstack->getData();
iif (isset($data['data'])) {
  $country_code = $data['data']->decode()->country_code;
}

Drupal 7

$ip = '111.222.333.444';
$options = array('output' => 'json');

$data = ipstack($ip, $options);
$ipstack_url = ipstack_build_url($ip, $options);

Detail documentation see at ipstack site.