Website & network checks

SSL, HTTP headers, on-page SEO, IP lookup, IPv6, email checks and robots.txt

Left today 10/10 uses · Guest

IP lookupEnter an IP or domain to see the network owner, country, IP range, host name and abuse contact. IPv6 testTest your IPv4 and IPv6 connectivity, see both addresses and which one your browser prefers. SSL checkerCheck a site's HTTPS: whether the certificate is valid, when it expires, who issued it, which domains it covers and HTTP/2 support. HTTP header checkerSee every HTTP response header, the redirect chain, response time, HTTP/2 and a security-header grade. SEO meta checkerSee how a page appears on Google and when shared on Facebook, LINE and X, with checks for title, description, canonical and robots. Heading checkerSee all of a page's headings as a tree and check for a single H1, skipped levels and empty headings. Email checkerCheck the format, whether the domain has mail servers (MX), whether it's a throwaway address and common domain typos. robots.txt generatorChoose which bots may crawl your site, block folders and AI training bots, and add your sitemap. llms.txt generatorFill in your site name, description and key pages to get an llms.txt file in the standard format for ChatGPT, Claude and other AI. UTM builderAdd campaign source and medium to a link to see where your traffic comes from in posts, ads and emails. Meta tag generatorFill in the page title, description and image to get HTML tags for Google, Facebook, LINE and X, with previews.

About Website & network checks

Tools for site owners, marketers and admins. Enter a link or domain and we check the site for you — when its SSL certificate expires, whether its headers are secure, or how a page appears on Google and when shared.

Checks that contact other servers have a daily quota (10 for guests, 50 for free members, unlimited for supporters); the IPv6 test and the robots.txt / llms.txt generators are unlimited. Only public websites can be checked.

FAQ

How many checks a day?

10 for guests, 50 for free members and unlimited for supporters. Failed checks don't count.

Can I check an internal company site?

No — only public websites on the internet.

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