usagov:

If you applied for the 2015 Diversity Visa lottery, you can now check your status online. 

You may receive an e-mail from the U.S. government that reminds you to check your status through the DV Entrant Status Check, but the government will not e-mail you the results. Be suspicious of e-mails that claim you’ve won. Learn how to spot and report Diversity Visa lottery scams.

(Source: usagov-blog)