Verifying character sets in domain name requests

Abstract

Systems and methods of the present invention provide for one or more server computers communicatively coupled to a network and configured to: create a data table of characters, where each character in the data table is assigned a false Boolean value; for each character found in each domain name in a DNS file, update the Boolean value to true; receive a domain search request comprising a token and a TLD; generate candidate domain names using the token and the TLD; query the database to determine if any character in the domain name has the false Boolean value in the data table; and if so, remove the domain name from the candidate domain names.

The invention claimed is: 
     
         1 . A system comprising at least one processor executing instructions causing a server computer, coupled to a network, to:
 query a database coupled to the network to create a domain name character data table comprising a plurality of characters, and a first Boolean value for each of the plurality of characters;   access a domain name system (DNS) server to retrieve a plurality of registered domain names comprising a top level domain (TLD);   for each character in each of the plurality of registered domain names, update, within the domain name character data table, the first Boolean value to a second Boolean value;   decode a transmission comprising a token and the TLD, and received from a domain request user interface control displayed on a client computer coupled to the network;   generate a list of candidate domain names, using the token and the TLD;   for each domain name in the list of candidate domain names:
 query the database to determine if at least one character in the domain name comprises the first Boolean value in the domain name character data table; and 
 responsive to a determination that the at least one character comprises the first Boolean value in the domain name character data table, remove the domain name from the list of candidate domain names.