You are allowed to enter at some amount of Deep Web markets with the only help of alternative URL, it means next : prospective buyers and merchants are not allowed to register before they will acquire an alternative URL from an previously signed in vendor or buyer.
Search for those at http://deeponionmarkets.com/, it possesses new links to all of the Darknet markets. You may follow these alternative link in order to get access to the sites.
In case that there are some issues with an access,for example, links won’t work, you should wait and check for Dark Web marketplaces URLs. Keep trying, as some of the marketplaces shut down and let registrations periodically, depending on server load.