Most of us believe that Alexa website traffic rank is the standard and accurate. I checked Traffick Ranks of some websites today in Alexa. To my surprise I got two different traffic ranks for the same web site. First I got one rank, But when I checked again for the same site it gives different rank.

So, Which one is Correct Traffic Rank?

The following graphics shows Alexa Traffic Rank for TechCrunch in time intervals of less than a minute.

In the first Graphic Alexa showing 427 as a traffic Rank for TechCrunch.

In the first Graphic Alexa showing 431 as a traffic Rank for TechCrunch. This happened not only for TechCrunch, Other websites too.

So, Which one is the Correct Traffic Rank for TechCrunch?