NETWORK
DIAGNOSTIC.
Enter a domain or IP. The diagnostic combines public queries and controlled external tests, shows where each piece of evidence comes from and generates local commands to dig into what the browser cannot measure.
Diagnostic target
The active port test only runs after the automatic Cloudflare Turnstile validation.
Private hosts, localhost and .local names are never sent to public services. TLS/HTTP and light TCP checks run on the portal infrastructure; a full Nmap scan stays limited to authorized flows.
Public resolution
Registration and network
Public IP
Application and HTTPS evidence
Exposed services
Route and map
Operational verdict
Generated commands
Recommended sequence
RECENT LOCAL QUERIES
Frequently asked questions
What does Network Diagnostic check?
For a domain or IP, it queries DNS, RDAP and ASN, tests the HTTP and HTTPS response, checks common ports and prepares the traceroute. Each block shows where the evidence came from and what still needs to be confirmed on your network.
Why is the result different from what I see on my computer?
The external tests run from the Bit Happens infrastructure, not from your network. A firewall, VPN, local DNS or CGNAT can make the same target answer differently for you. Use the suggested commands to compare.
Does an HTTPS timeout mean an invalid certificate?
No. A timeout means the connection did not complete in time, because of a firewall block, a service down on port 443 or the wrong hostname. A certificate problem shows up as a TLS error, not as a timeout.
Can I diagnose an IP or host on my internal network?
Not through the portal. Private addresses, localhost and .local names are never sent to external services. For them, run locally the commands the diagnostic generates.
Is the port test safe for the target?
It only tries to open a TCP connection on a few common ports, without reading banners or trying to authenticate. Even so, use it only on assets you manage or are authorized to test.