Probe Toolkit
Every network tool. One tab.
Probe Toolkit launched on March 25, 2026.
What it does
42 free IT and network tools in one tab. Paste an IP, domain, URL, MAC address, JWT, or anything else — Probe Toolkit detects what it is and runs every matching tool in parallel. Get geolocation, DNS records, WHOIS, SSL certs, blacklist checks, and more on a single results page. No signup. No tracking. No frameworks. Client-side where possible — your data stays in your browser. Built for sysadmins, developers, and anyone who's tired of opening 12 tabs to diagnose one problem.
Free online IT tools — DNS lookup, WHOIS, IP geolocation, subnet calculator, SSL checker, JWT decoder, and 30+ more. Network, email, security, and developer tools. No signup, no tracking.
Geolocate any IP address — see country, city, ISP, and more. Calculate network addresses, broadcast, host ranges, and CIDR notation. Look up BGP autonomous system information for any IP or ASN. Expand CIDR blocks into IP ranges and split into smaller subnets. Check SSL certificate details, expiry, and chain for any domain. Follow and visualize the full HTTP redirect chain for any URL. Analyze meta tags, Open Graph, and Twitter Card data for any URL. Parse any user agent string to identify browser, OS, and device. Generate strong, random passwords with customizable options. Test regular expressions with real-time matching and explanation. Compare two blocks of text and see the differences…from probetoolkit.com
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