The website owner has installed an Alexa Certify Code on the pages of their site and chosen to show the metrics publicly.
If a site has Certified Metrics instead of estimated, that means its owner has installed code allowing us to directly measure their traffic.
Audience Geography The audience geography data describes where visitors to this site over the past month are located, and how the site is ranked in popular countries. Engagement metrics help you understand how interested a site's visitors are with the site's content.
If a country is not listed, it is because Alexa does not have enough data for this site to rank/measure the site's popularity among that country's online population. The metrics are updated daily based on the trailing 3 months.
You should not have too much external links on your website.
Other wise this will affects your website negatively.
For these sites, we show estimated metrics based on traffic patterns across the web as a whole.