Network Tools

Run Unbound as a validating, recursive, caching DNS resolver for network domain lookups.

packet.guru checks browser-exposed IP and location data, privacy indicators, DNS and WebRTC leaks, plus network tools.

Port Checker tests whether ports are open and whether router port forwarding is configured.

Get a free JavaScript-focused web address through JS.ORG for hosting a project on GitHub Pages.

Route DNS queries through Quad9, a free public recursive resolver focused on security and privacy.

LibreQoS Test measures connection quality and latency while a network is under load.

CanYouSeeMe checks whether an internet connection has an open port and verifies port forwarding.

LibreSpeed measures internet speed in a browser and can also be self-hosted as open-source software.

NetBlocks Internet Performance Monitor checks network connectivity and performance issues.

Register free domain names or short subdomains with DNS support through GetFreeDomain.

MyPublicWiFi turns a Windows computer into a wireless hotspot for sharing an internet connection.

Pinging.net monitors internet connectivity and displays network status measurements.

Use No-IP for dynamic and managed DNS, domain registration, and SSL certificate services.

ifconfig.me displays a visitor’s public IP address and provides an API for IP geolocation data.

SilverBench runs a JavaScript CPU benchmark and stress test in the browser, with live results and detailed statistics.

Manage free, dynamic, and static DNS hosting, subdomains, and web forwarding through FreeDNS.

Measure internet download, upload, ping, and jitter in a browser with OpenSpeedTest, an HTML5 speed test.

Hurricane Electric’s BGP Toolkit provides routing lookup pages, including prefix and network reports.

Create a dynamic DNS subdomain and update it through myaddr.tools HTTP API.

Use Tiarap’s DNS resolver to block ads, trackers, malware, scam, and phishing domains.

IPVoid provides IP, network, and DNS utilities, including blacklist checks, WHOIS lookups, and ping tools.

localhost.run creates an SSH tunnel that connects web applications on a local computer to the internet.

Connect to UncensoredDNS servers through encrypted DNS over HTTPS or DNS over TLS protocols.

BGP.Tools helps diagnose BGP routing and explore internet routing data through its looking glass.