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Availability Check

Web Tools

On-demand HTTP availability check with status and response time.

Run this tool: the interactive Availability Check loads here (requires JavaScript). Input: URL — e.g. https://example.org.

Description

The Availability Check performs an on-demand HTTP request against a URL from the NetworkUtils.org server, reporting the status code, response time and whether the endpoint is available. It follows redirects, so the status reflects the final destination.

Features

✓ On-demand HTTP availability check
✓ HTTP status code and response time
✓ Redirect-aware (reports the final destination)
✓ Clear available / not-available verdict

How to Use

Enter a full URL (https://example.org) and run the tool. The probe fetches the URL from the NetworkUtils.org server and reports the result.

Input: URL — e.g. https://example.org.

Understanding the Results

The output shows the final URL, the HTTP status code and status text, the response time in milliseconds, and an available YES/NO verdict. A 2xx or 3xx response means the endpoint answered; a 4xx/5xx, timeout or connection error means a problem worth investigating. Because the request comes from a single server, it is a point-in-time check, not a global census.

Common Use Cases & Examples

→ Quickly confirm an endpoint is reachable after a deploy.

→ Verify a site is back up after an incident.

→ Check the HTTP status and response time of a specific URL.

→ Confirm a redirect chain reaches a working final destination.

Frequently Asked Questions

What HTTP status counts as "up"?

Any 2xx or 3xx response indicates the server responded. A 200 is ideal, but a 301/302 to a working destination is also healthy. 4xx and 5xx responses, timeouts and connection errors indicate a problem worth investigating.

Does this check from multiple locations?

No. The request is made once from the NetworkUtils.org server. It tells you whether the endpoint is reachable from that vantage point at this moment; it cannot detect a regional CDN edge problem affecting only part of your audience. For multi-region checks, use a dedicated global monitoring service.

Is this a replacement for uptime monitoring?

No — it is an on-demand, single-point check at one moment in time. For continuous monitoring with alerting, use a dedicated uptime service that polls on a schedule from multiple regions and notifies you on failure.

About this tool

Maintained by
networkutils.org editorial team
Last updated
September 2026
Testing methodology
Web tools issue real HTTP/HTTPS requests from the NetworkUtils.org server using Node.js http/https, following redirects where appropriate, and report response headers, status codes, redirect chains and per-phase request timing.
Technical references
RFC 9110 — HTTP Semantics