Is It Down?
Perform a one-time remote HTTPS HEAD check from independent edge probes. Distinguish local connectivity issues from true origin outages.
Best solution
Network diagnostic: Is It Down?; Edge Probe Latency & Location.
No measurement yet. This checks from Globalping probes, not from your computer. No continuous monitoring.
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Methodology & calculation rule
Executes an HTTPS HEAD request from remote probe vantage points to verify web service reachability without browser cache bias.
Network observations execute bounded requests to public measurement backends (ipify, Google Public DNS, Globalping, or Cloudflare). Measurements distinguish local client configuration from external internet reachability.
No browsing history, private tokens, or credentials are captured. Results are snapshots of external probe vantage points at the recorded observation timestamp.
Real-World Context & Technical Standards
HTTP 2xx, 3xx, 4xx, and 5xx Semantics
HTTP 200 signals successful response; 301/302 indicate resource redirection; 403/404 denote client access denial; and 500/502/503 represent origin gateway and application server failures.
Header-Only Probing Protocols
An HTTP HEAD request queries only HTTP response headers without transmitting the document body, conserving network bandwidth while verifying origin server responsiveness.
WAF & Bot Management Behavior
Web Application Firewalls (such as Cloudflare or AWS WAF) may challenge or block automated diagnostic probes with HTTP 403/503 while regular browser visitors with valid sessions pass through smoothly.
Related network diagnostic tools
| Tool | Metric | Scope |
|---|---|---|
| What Is My IP Address? | Diagnostic | what is my ip address |
| IP Address Lookup | Diagnostic | ip address lookup |
| Remote Ping Test | Diagnostic | ping test |
| DNS Lookup | Diagnostic | dns lookup |
| Packet Loss Test | Diagnostic | packet loss test |
Frequently Asked Questions
What does an HTTP 403 status code indicate on Is It Down?
HTTP 403 Forbidden means the remote web server is operational and reached successfully, but access was denied by an edge security policy, WAF, or geo-blocking rule.
Why might a website appear down for me but up on the test?
Local browser cache corruption, local ISP routing failures, misconfigured VPN tunnels, or DNS resolver caching can prevent your computer from reaching a site that is otherwise healthy globally.