Quick Answer
A website can fail because of DNS, hosting, SSL, redirects, server errors, or a local network issue. Check each layer in order.
Step-by-Step
- Test reachability and HTTP status to see if the server responds.
- Check DNS records and propagation if the domain recently changed.
- Inspect redirects, headers, and SSL certificate validity.
- Use ping, packet loss, and latency checks when the issue may be network related.
Recommended Workflow
Open the most relevant calculator or utility first, enter a realistic starting point, then use the supporting tools to check assumptions, clean inputs, or prepare the final output.
FAQs
What does a 5xx status mean?
A 5xx status usually means the server or upstream service is having a problem.
Can DNS be the issue if the site works for some people?
Yes. DNS propagation, caching, or regional DNS differences can make a site work in one place and fail in another.