Guides

Short, practical articles — not a dump of generated pages.

• Diagnosis

  Is it down, or is it just me?

  How to tell a global outage from a problem on your Wi-Fi, DNS, VPN, or browser.

• How-to

  How to check if a website is down

  A practical sequence: your browser, an independent monitor, DNS, TLS, and the HTTP status.

• DNS

  How to fix DNS problems

  What NXDOMAIN, missing A/AAAA records, and resolver failures mean — and what to try safely.

• HTTP

  What does HTTP 503 mean?

  503 Service Unavailable: the server is reachable but told us it cannot handle the request right now.

• HTTP

  What does HTTP 502 mean?

  502 Bad Gateway: a proxy or CDN is up, but it could not get a valid response from the origin.

• Troubleshooting

  Website not loading

  A calm checklist when a page spins, stays blank, or never connects.

• DNS

  DNS server not responding

  What that Windows and router message means, and how to recover without risky “repair” tools.

• Troubleshooting

  Website works on phone but not computer

  Why one device can load a site while another cannot — DNS, cache, extensions, and IPv6.