Network tools for DNS lookups, IP information, WHOIS queries, and more. DNS lookups use Cloudflare's DNS-over-HTTPS service. IP geolocation data provided by ipapi.co. Some features may be limited due to browser security restrictions (CORS).
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Network Tools
DNS lookup, WHOIS, IP info, reverse DNS, HTTP headers, and subnet calculator.
All-in-One Network Diagnostics
This page bundles the most common network lookups into a single interface: DNS record queries, reverse DNS, WHOIS domain registration data, IP geolocation, HTTP response headers, and IPv4 subnet calculations.
How Lookups Are Performed
DNS and WHOIS queries are resolved through a lightweight backend API, while the subnet calculator runs entirely in your browser. Results are returned in real time with no caching, so you always see the current state of the network.
Who Is This For?
DevOps engineers troubleshooting DNS propagation, security analysts investigating domains, and developers verifying HTTP headers or CORS configuration. Having these tools in one place saves switching between half a dozen CLI commands.