Check up to 200 URLs at once — response status codes, full redirect chains, the final URL, canonical, robots.txt + meta-robots and an indexability verdict. Check as any browser or search-engine bot.
What each class means — and the codes you'll see most
Technical SEO essentials — for one URL or a list of 200
The response code plus every redirect hop — spot 302-where-301-belongs, http→https, chains that are too long, and loops.
rel=canonical (self vs cross), robots.txt, meta-robots and X-Robots-Tag → a clear Indexable / not verdict, the way a crawler sees it.
Run the check as Googlebot, Bingbot, YandexBot, Applebot, a mobile device or a desktop browser — some servers respond differently to each.
DA.N watches status codes, DNS and redirects for the domains you track — and alerts you when something changes.