There are many different ways that you can attempt to look up how to buy credit-card numbers from the dark web. One of the most popular ways is using a search engine such as Google, MSN or Yahoo. All you need to do is enter the number in question and hit the Enter key. If you have any luck, the search will return results which will be detailed. However, these methods may not necessarily be secure as you are only able to view information if the number has been included within the web's domain.