code: def check(domain, prefix, code, strategies='*'):
      if strategies == '*' or 'dns_txt' in strategies:
          if check_dns_txt(domain, prefix, code):
              return True
      if strategies == '*' or 'dns_cname' in strategies:
          if check_dns_cname(domain, prefix, code):
              return True
      if strategies == '*' or 'meta_tag' in strategies:
          if check_meta_tag(domain, prefix, code):
              return True
      if strategies == '*' or 'html_file' in strategies:
          if check_html_file(domain, prefix, code):
              return True
      return False