Alexa’s traffic rankings are based on the past three months of global traffic measured from our global traffic panel and are updated daily. An overall traffic ranking of “No data”, or “No rank” in the Toolbar, indicates that none of our sources show visits to the site in question during the past three months (as of our last update).
Please see How are Alexa’s traffic rankings determined? for more details on how our system works.
Note: If your site’s metrics are Certified you can choose to display directly measured Global and Country ranks for your site, even if there is not enough data from our traffic panel to rank your site.