Domain & DNS Checker
Check a domain's registration and expiry, transfer lock, DNSSEC, and the CAA records that control who can issue TLS certificates in your name.
Open toolDNS Propagation Checker
Made a DNS change? Look up any record across ten major public resolvers worldwide at once and see whether it has propagated, or which resolvers are still serving a cached value.
Open toolSubdomain Finder
Discover the subdomains of any domain from public Certificate Transparency logs: the forgotten dev, staging and admin hosts that quietly make up your external attack surface.
Open toolTyposquat Finder
Generate the look-alike versions of your domain a scammer would register, misspellings, swapped letters, other extensions, and see which ones are already registered and live, including the mail-capable ones built for impersonation.
Open toolWebsite Security Checker
Scan a website's HTTPS enforcement, HSTS, security headers, cookie flags and software disclosure to see what is leaving your visitors exposed.
Open toolRedirect Checker
Trace a URL's full redirect chain hop by hop over both http and https: every status code, 301 versus 302, the final destination, loops and broken links.
Open toolLink Safety Checker
Paste a suspicious link to see where it really goes. We expand every redirect, then flag shorteners, look-alike domains, brand-in-subdomain tricks, brand-new registrations, raw IP hosts and risky downloads.
Open toolAI Visibility Checker
See whether ChatGPT, Claude, Perplexity and Google's AI can find and cite your website: AI crawler access in robots.txt, llms.txt, sitemap, structured data and JavaScript dependence.
Open toolEmail Security Checker
Enter a domain and scan its SPF, DKIM, DMARC, MX, MTA-STS and more to see what is configured correctly and what leaves you open to spoofing or delivery problems.
Open toolEmail Header Analyzer
Paste the raw headers from any email to trace its delivery path server by server, read the SPF, DKIM and DMARC results, find the originating IP, and spot the mismatches that signal spoofing or phishing.
Open toolSPF & DMARC Generator
Pick the services that send email for your domain and choose a policy, then copy ready-to-paste SPF, DMARC and MTA-STS DNS records to stop spoofing and fix what the Email Security Checker flags.
Open toolCyber Incident Cost Calculator
Estimate what a data breach or ransomware attack would cost your business: response, downtime and recovery, with a clear breakdown. Move the sliders for your size, data and likely downtime.
Open toolPassword & Passphrase Generator
Generate a strong random password or an easy-to-type passphrase, built from cryptographic randomness entirely in your browser. Nothing is sent, stored, or logged, and your password manager gets something worth keeping.
Open toolReadiness quizzes
Short, honest self-assessments for cybersecurity, SOC 2, PCI DSS, cyber insurance and Canadian privacy (Law 25 / PIPEDA). Score your readiness and see what to fix first.
See the quizzesMore tools on the way.
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