Domain Zone Processor is Windows software for extracting domain names from a zone file. The Top-Level Domain (TLD) Zone Files are the database files maintained by VeriSign Global Registry Services. These map the active Second-Level Domain Names (.com, .net, and .org) with their unique Internet Protocol (IP) addresses. There are separate files for each of the .com, .net, and .org TLDs. You can use Domain Zone Processor to extract domain names that satisfy specified conditions: number of letters in a name, name server, unwanted Letters or characters, and domain names that contain one or more specified keywords.