Empire Market is fine and most popular Dark Network Market at the time. Being this big has it's consequences regular Ddos attack causes essential Empire Market link to be down, and alternative links too. That lead that empire marketplace had to create a lot of URL and onion links and links. And the thing is that there is not to many ways users can get a active Empire Marketplace links.
That's why Empire Market decided to create a special page where their users can always find working URLs and onion mirrors, for quick access to Empire Market. Here it is http://empiremarket-url.com be sure to use it every time you need enter to darknet market empire market.