Why the status is not ok: dns_not_found (confirmed twice and by two public resolvers), dns_error (DNS uncertain, not a verdict), timeout (after a second try of 30 s at the end of the run), connection_refused, tls_error, http_404, http_403, host_error_page (an error page of the server or of the host answered with a 200: "Error. Page cannot be displayed", "404 Not Found"), challenge_page (an anti-bot challenge page, whatever its status code), login_page (a sign-in page instead of a site), waf_rejected, endless_response, geo_blocked, app_root_without_content, script_only_body, parked_domain_lander, parked_domain_page, redirect_to_parking, domain_taken_over (spam content on an expired domain), hosting_disabled, hosting_suspended, under_construction, maintenance_page, default_server_page (placeholder), no_readable_text, page_over_size_limit, too_many_elements, too_deep (a page too complex to be read), analysis_timeout, analysis_failed (the analysis of the page went past its time or memory limit), content_type_not_html, invalid_url, unsupported_port, port_not_allowed (only the ports 80, 443, 8080 and 8443 are audited), no_website, redirects_to_social_page (the address ends on a social network page: a profile, not a website), same_website: (duplicate)... null when ok.