IP, DNS, URL, and network utilities. 16 free online tools, no signup required. Most run in your browser; some tools contact third-party services.
Network Tools gathers the everyday utilities that make diagnosing connections and understanding the web much less mystical. A support engineer brings up DNS Lookup to confirm whether a domain resolves, or runs WHOIS Lookup to see who owns a site and when the registration expires. Sysadmins and privacy-conscious users probe their own connection with WebRTC Leak Test to check that the browser does not expose a real IP behind a VPN, and developers map routing rules with IP Subnet Calculator. Teams shipping an API validate that endpoints behave with HTTP Headers Info and HTTP Latency Test, while anyone moving between hosts can check the exact type a server expects with MIME Type Checker. The set also includes practical utilities like URL Parser, Port Scanner, and SSL Checker for confirming that a certificate is current. Where an action needs the network — a lookup or a latency probe — the tool is transparent about it; the rest is local, and none of the information you inspect is stored or shared. It is equally at home on a production terminal and a laptop troubleshooting Wi-Fi from a cafe. Everything is free and runs fast, with no account required. Dig into the network tools the next time a domain misbehaves or an IP deserves a closer look.