Internet Tools — IP Lookup, DNS, Whois, SSL & More

Sometimes you need to know what your computer is actually broadcasting to the internet. These two tools give you that visibility without any fuss.

My IP

You just started using a VPN because you're traveling and want to protect your connection. The provider says you're now connected to a server in Sweden. But is it actually working? Are you really appearing as if you're in Sweden, or did the VPN fail to connect properly?

The My IP tool shows you your public IP address — the address that websites see when you visit them. Load it up, and you get your IP and some basic geolocation information. If your VPN is working, you should see an IP in Sweden. If you see your actual home country's IP, something went wrong.

It's also just useful to know. You're setting up port forwarding for a home server and need to tell someone your IP address. You're debugging a connection issue with your ISP and they ask "what's your public IP?" You're testing whether a website can access your location. This tool answers all of those questions in one second.

Browser Info

A website looks broken. Colors are wrong, the layout is weird, buttons aren't working. You contact support and they ask "what browser are you using?" You think you know, but you want to be sure and give them exact details.

The Browser Info tool shows you exactly what your browser is telling the world about itself. Your user agent string, your browser version, your operating system, your screen resolution, whether you're on mobile or desktop, JavaScript support, cookies enabled, all of it. It's verbose because websites use this information to decide how to show you content.

It's genuinely helpful for troubleshooting. Some bugs only happen on specific browser versions. Some features don't work on older browsers. When you give support your exact browser info instead of "I think I'm on Chrome," they can immediately rule out a whole class of problems.

Both tools work right in your browser with no server calls, no tracking, no login. Your IP and browser info stay on your device. Load them up whenever you need confirmation about what you're broadcasting to the internet.

DNS Lookup

You changed your domain's DNS records an hour ago and want to check if the new values have propagated. The DNS lookup tool queries DNS records for any domain — A, AAAA, CNAME, MX, TXT, NS, and more. Enter a domain, pick the record type, and see the current results.

It's also useful for troubleshooting email delivery (check MX records), verifying SPF and DKIM setup (check TXT records), or confirming your CDN is properly configured (check CNAME records). Way faster than opening a terminal and running dig.

HTTP Header Inspector

A website is behaving strangely — caching when it shouldn't, redirecting unexpectedly, or missing security headers. The HTTP header inspector shows you the response headers for any URL. Enter the URL, hit inspect, and see every header the server sends back.

It also checks for important security headers like Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security, flagging which ones are present and which are missing. A quick security audit in one click.

Whois Lookup

Who owns a domain? When does it expire? Which registrar is it registered with? The Whois lookup tool gives you registration details for any domain. Useful when you're buying a domain and want to check if a similar one is taken, or when you need to contact the owner of a domain for business reasons.

It shows the registrar, creation date, expiry date, last updated date, and name servers. Essential information that's surprisingly annoying to find without a dedicated tool.

SSL Certificate Checker

Your site's SSL certificate expired and you didn't notice — now visitors see a scary browser warning. The SSL checker verifies that a domain's HTTPS is working correctly. It checks certificate accessibility, CAA DNS records, and HSTS headers.

Run it on your own domains periodically to make sure everything is in order, or use it to verify a third-party site's SSL setup before integrating with their API. Prevention is much cheaper than debugging production SSL errors at 2 AM.