System and method for website categorization

A system, comprising:

• at least one server computer in communication with a network, the at least one server computer including a processor configured to:
• receive one or more tokens together forming all or part of a string comprising a domain name;
• compare each of the one or more tokens to each of a plurality of categories in a category structure to determine, for each pairing of one of the tokens with one of the categories, a token probability that the token belongs to the category;
• for one or more of the token probabilities, increase or reduce the token probability according to a first frequency at which the category associated with the token probability is selected as a correct category or declined as an incorrect category for the token associated with the token probability, the first frequency identified from a plurality of domain name searches previously processed by a first of the at least one server;
• calculate, from the token probabilities for each of the plurality of categories, a final probability of the domain name belonging to the category;
• and
• categorize the domain name in the category having the highest final probability.