If your site’s metrics are Certified you can display Global and Country ranks for your site based on Certified Site Metrics, instead of metrics estimated from their data panel.

Alexa’s Traffic Ranks are for domains only (e.g., domain.com). They do not provide separate rankings for subpages within a domain (e.g., http://www.domain.com/subpage.html ) or subdomains (e.g., subdomain.domain.com) unless they are able to automatically identify them as personal home pages or blogs, like those hosted on sites like Blogger (blogspot.com). If a site is identified as a personal homepage or blog, it will have its own Traffic Rank, separate from its host domain.

For more information about Alexa’s traffic rankings, you can visit:

http://www.alexa.com/about

There are limits to statistics based on the data available. Sites with relatively low measured traffic will not be accurately ranked by Alexa. They do not receive enough data from sources to make rankings beyond 100,000 statistically meaningful. (However, on the flip side of that, the closer a site gets to #1, the more reliable its rank.) This means that, for example, the difference in traffic between a site ranked 1,000,000 and a site ranked 2,000,000 has low statistical significance. Sites ranked 100,000+ may be subject to large ranking swings due to the scarcity of data for those sites. It is not unusual for such sites to decline to “No data” Traffic Ranks, or to improve suddenly.

Have more questions? Submit a request to Alexa