● Free tool · runs in your browser
DNS & Domain
Health Checker
Your domain's DNS settings quietly control whether your website loads, whether your email gets delivered, and how easy you are to impersonate. Enter a domain to get a plain-language health check — resolution, nameservers, email security, DNSSEC and more.
🔒 No server of ours is involved. Your browser asks public DNS resolvers (Cloudflare, then Google) directly — exactly what any computer does to look up a website. We never see your query, and nothing is stored. You can watch the lookups in your browser's developer tools.
Try: cloudflare.com · github.com
Want these gaps fixed — and kept fixed?
ByTE X Bit helps small businesses lock down DNS, email authentication, and domain security as part of a managed security service. We can set this up correctly and watch it for you.
Talk to us →🔒 100% client-side. Lookups go straight from your browser to public DNS-over-HTTPS resolvers; ByTE X Bit runs no backend and stores nothing. Results are a point-in-time snapshot of public DNS and are general guidance, not a full audit.