Welcome to CoolNetTools.ca!

This site provides IT professionals and students alike with simple, handy networking tools.

• TCP Port Checker - check which ports are open at a given hostname or IP address
• DNS A Lookup - look up the IPv4 and IPv6 addresses (DNS A/AAAA records) for a given DNS name
• Request Headers - what headers is my browser sending?

We add new tools from time to time, so check back!