dsieve
Filter and enrich a list of subdomains by level.
Take a single domain or read an input file and extract unique parent domains, enrich subdomains, filter subdomains by level, or find out which subdomains have the most number of sub-subdomains (or sub-sub-subdomains or sub-sub-sub...). Dsieve supports any format of URL, with or without protocol, port, path, parameters.