Network tools
Free diagnostics for your domain and connection.
Check DNS, email, security, blacklist status, ports, speed and uptime — then talk to us if something needs fixing.
Health report
Full domain check — site, email, DNS and blacklist
Speed test
Download, upload, ping, jitter and bufferbloat
Site check
DNS, SSL and security headers
Email check
SPF, DKIM and DMARC records
Blacklist check
Spam and DNS blocklist lookup
DNS lookup
A, MX, TXT, NS and CNAME records
Domain check
WHOIS expiry and redirect chain
Security scan
TLS protocol, cipher and header grade
Port check
Common ports 80, 443, 25, 587 and 3389
System status
MrTech platform uptime
·
MrTech Melbourne publishes free browser-based IT diagnostics so Melbourne businesses can check DNS, email authentication, website security, blacklist status, open ports, connection speed and public uptime without installing software. Use a tool when something feels wrong — slow mail, a site that will not load, or a domain you are about to hand over — then keep the results if you need us to fix it.
What can these free IT tools check?
The suite covers the checks Melbourne offices ask for most often: DNS records (A, MX, TXT, NS, CNAME), SPF/DKIM/DMARC email authentication, HTTPS and security headers, spam-blacklist reputation, common TCP ports on your public IP, WHOIS expiry and redirect chains, plus a combined domain health report. Speed test and status monitoring sit alongside the tools so you can validate the connection and see whether our public endpoints are up.
When should a Melbourne business run these checks?
Run DNS and email checks after a Microsoft 365 migration, domain move or mail-delivery complaint. Use site and security checks before a launch or after a hosting change. Use blacklist and port checks when outbound mail is rejected or a VPN/remote-access path fails. None of the tools replace managed monitoring — they give you a clear snapshot you can share with your IT partner.
How do the results help if something is broken?
Each tool returns plain-language findings rather than raw packet dumps. If records are missing, certificates are weak or a blacklist hit appears, you have evidence for the next step — fix it in-house or book MrTech for Melbourne IT support covering websites, Microsoft 365, cyber security and networking under one roof.