1. A method of classifying a domain name, comprising: identifying a set of character-based n-grams corresponding to a domain name string, the domain name string being associated with a domain name; determining a domain name vector point in a multidimensional space, wherein each dimension in the multidimensional space corresponds to each character-based n-gram in the set of character-based n-grams; comparing the domain name vector point in the multidimensional space with a plurality of vector points located in the multidimensional space, wherein each of the plurality of vector points corresponds to each of a plurality of domain names classified in a domain name classification; determining whether the domain name is correlated to the plurality of domain names based on distances between the domain name vector point and the plurality of vector points in the multidimensional space; and classifying the domain name in the domain name classification if it is determined that the plurality of vector points and the domain name vector point are correlated.