About

Net Work ? is a tiny page that answers one question:

If you can see this page, does the net work?

The answer is usually YES. The number below it is a rough browser-to-this-site latency measurement.

This website is intentionally tiny. It is designed to load even on poor connections.

Net Work ? is not an ICMP ping tool.

It measures whether a browser can successfully reach a website through DNS, TLS and HTTP.

Methodology

Net Work ? does not use ICMP ping. Browsers cannot send ICMP packets directly.

Instead, this site measures browser-to-site HTTP round-trip time using repeated requests to a tiny same-origin file:

/ping.txt

Each request is timed with performance.now(). Several samples are collected, and the median value is shown on the homepage.

What is RTT?

RTT means round-trip time. It is the time needed for a tiny request to go from your browser to this website and come back.

This site measures HTTP RTT, not raw ICMP ping. It includes browser, HTTP, cache behavior, and Cloudflare/server response overhead.

What is Jitter?

Jitter means how much the latency changes between requests.

This site calculates jitter by comparing neighboring RTT samples and taking the average difference.

What is Timeout Loss?

Timeout Loss means how many tiny HTTP requests failed within the timeout window.

It is not raw packet loss at the network layer. It is a browser-visible timeout rate, which is still useful for judging whether this website is reachable after the page has loaded.

What does YES mean?

YES means this browser successfully completed an HTTPS request to 114-514.org.

It does not guarantee that every website, DNS resolver, game server, or service on the Internet is reachable.

What does NO mean?

NO means the browser could not complete the test request after this page had already loaded.

Possible causes include:

• No Internet connection.
• DNS failure.
• Firewall or network restrictions.
• Cloudflare or server-side issues.
• The request timed out inside the browser.

If the site itself cannot be loaded at all, this page cannot show NO. In that case, the browser will show its own network error page instead.

Why not ICMP ping?

Traditional ping uses ICMP packets. Web browsers do not allow normal websites to send ICMP packets.

HTTP is therefore used as a practical browser-safe approximation. Values shown here are usually higher than command-line ICMP ping results.

Privacy

Net Work ? does not require an account, login, or personal profile.

• No account system.
• No cookies from this site.
• No fingerprinting code.
• No long-term network history stored by this site.

If advertisements are enabled, ads may be served by EthicalAds. The ad provider may process basic request information required to serve and measure advertisements, such as IP address, User-Agent, page URL, and ad impression data.

Open Source

The measurement code is intentionally simple. You can inspect it directly in the page source.

The core idea is:

fetch("/ping.txt") → measure elapsed time → repeat → show median

Source code is available on GitHub.

github.com/cernmeow/114-514.org

License: MIT