See your network the way the internet sees it.
DNS, HTTP, SSL, WHOIS, ports, and more — checked server-side from outside your network, so you see what's actually reachable, not just what your local network happens to see.
Find the right tool, fast
Every checker on netsh.io, grouped into network, DNS, security, and IP — so you're never digging through one long menu.
Browse the guidesDNS & Mail
No account required
Run a check, get the answer, move on. No saved lookup history — sign in only if you want an API key.
Outside-in diagnostics
Every check runs from a NetSH server, not your browser — giving you a clean external vantage point.
Fast, live results
Checks run in parallel where possible, with results streaming back as they complete.
One toolbox
DNS, email, HTTP, SSL, ports, IP, and website health — without bouncing between a dozen different tools.
Scriptable, not just clickable
20 of the checks above are JSON API endpoints too — DNS, SSL, WHOIS, and more. Free tier included, 300 requests a day, no credit card.