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An online ping test sends ICMP Echo Requests to a hostname or IP address and measures the time for matching Echo Replies to return. The result is a round-trip time (RTT), usually shown in milliseconds, plus packet loss when probes receive no reply. Test both the DNS name and its literal IP when possible, repeat the probes, and treat a timeout as evidence about ICMP—not proof that a website is down.
What an online ping test measures
Ping operates at the IP network layer. Microsoft describes it as verifying IP-level connectivity by sending Internet Control Message Protocol (ICMP) Echo Request messages. A responding host sends an Echo Reply, allowing the tester to calculate the elapsed round trip.
- Round-trip time (RTT): The time for a request to reach the target and the reply to return, reported in milliseconds.
- Packet loss: The percentage of requests that receive no matching reply.
- Minimum, maximum and average RTT: Repeated probes show the fastest path sample, the slowest sample and the arithmetic average.
- TTL information: Routers decrement a packet’s time-to-live (TTL) as it crosses each hop. The reply can expose its final TTL, which is useful context but not a direct distance measurement.
Ping does not measure download speed, upload speed, page-rendering time or the response time of a TCP or HTTP service. A low ICMP RTT can coexist with a slow web application, while a filtered ICMP request can coexist with a perfectly reachable website.
How to run a ping test online
A browser-based tester asks for a hostname or IP, sends probes from its own server, and displays RTT and loss. That vantage point matters: a test run from a data center may take a different route than one run from your home connection. Record the test location, target, probe count and time so later comparisons are meaningful.
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Choose the target
- Use a DNS name such as
example.comto test name resolution plus network reachability. - Use a literal IPv4 or IPv6 address to bypass DNS.
- If both are available, test both. If the IP replies but the name does not, investigate DNS resolution rather than assuming a routing failure.
Use repeated samples
One reply is anecdotal. Use enough probes to reveal variation and loss, then compare minimum, maximum and average RTT. Run the same test at different times if the problem is intermittent. Do not compare an IPv4 result from one location with an IPv6 result from another and call the difference a network change.
Read the output
| Output | What it tells you | What it does not prove |
|---|---|---|
| RTT in milliseconds | ICMP request-and-reply delay from that test location | Web-server processing time or throughput |
| Packet loss | Probes that received no reply | Application-level loss; ICMP may be filtered or rate-limited |
| Timeout | No reply arrived before the tester’s deadline | That the host, website or port is offline |
| TTL | Remaining hop-life value in the reply | An exact hop count or physical distance |
Run the same test from your own computer
Local tests complement an online test because they expose the path from your device and network. They also make it easier to repeat probes and save output.
Windows
- Open Command Prompt.
- Run
ping /n 20 example.comfor 20 IPv4 probes, orping /n 20 203.0.113.10for an address. - For IPv6, use an IPv6 literal or
ping /6 /n 20 host.example. - Note the packets sent, received and lost, followed by minimum, maximum and average times.
To inspect the route, run tracert example.com. Each line represents a hop probed with an incrementing TTL.
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Linux and macOS
- Open a terminal.
- Run
ping -c 20 example.com. On macOS, add-Wonly when you need to adjust the wait behavior; options differ between BSD and Linux versions. - Run
ping -c 20 203.0.113.10to test the literal IP. - Use
traceroute example.comfor hop-by-hop output. Linux systems may also providetracepath.
For an ongoing view of latency and loss at every hop, install and run mtr example.com where your operating system provides it. MTR combines repeated ping-style probes with traceroute data.
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Automate a repeatable sample
Save the hostname or IP, protocol family, date and local network conditions with every run. A wired connection, Wi-Fi connection and cellular connection can legitimately produce different paths and RTT distributions. Avoid drawing a conclusion from a single maximum value caused by a transient queue.
Why ping can time out while a website loads
ICMP is an integral part of IP, but the Internet Protocol is not designed to be absolutely reliable. A timeout means that the ICMP reply was not received in time; several explanations are possible.
ICMP filtering or rate limiting
A host firewall, cloud security group, router or upstream provider may drop Echo Requests or suppress replies after a threshold. Providers sometimes limit ping specifically, so occasional loss does not necessarily indicate user-visible failure.
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Your browser normally uses TCP (often TLS over TCP) or another application protocol and may reach a load balancer or CDN edge. ICMP can be handled by a different device or route. A web server can therefore answer HTTPS while ignoring ping.
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Routing, congestion or asymmetric return paths
Packets may be delayed, discarded or returned through a different path. Traceroute or MTR can show where delay or loss appears, but an intermediate hop that does not answer probes may still forward traffic normally.
Name-resolution differences
A hostname can resolve to multiple addresses, including IPv4 and IPv6 endpoints. An online tester and your computer may receive different answers. Compare the resolved address and test each address separately before blaming the network.
Diagnose latency, loss and intermittent failures
Separate DNS from reachability
- Resolve the hostname with your normal DNS tools.
- Ping the hostname.
- Ping the returned literal IP address.
- If only the hostname fails, check DNS records, resolver behavior and IPv4-versus-IPv6 selection.
Locate a path problem
Run tracert on Windows or traceroute on Linux/macOS, then use MTR for repeated per-hop samples. Look for a delay or loss that begins at one hop and persists through later hops. Loss visible only at an intermediate hop can be probe deprioritization rather than transit loss; judge the final destination and subsequent hops.
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Check the application separately
Use an HTTPS request or the application’s own health check to test the service layer. A successful ping cannot guarantee that a web server, API, database or other higher-level service is present or working. Conversely, a failed ping cannot disprove application reachability.
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Compare like for like
- Use the same target address, probe count and test location.
- Record whether the test used IPv4 or IPv6.
- Compare distributions (minimum, maximum, average and loss), not only one average.
- Repeat during the suspected failure window.
Common errors and fixes
| Symptom | Likely cause | Practical fix |
|---|---|---|
| “Unknown host” or name-not-found | DNS failure, typo or unavailable record | Check spelling, resolve the name, then test the literal IP. |
| Every probe times out | ICMP blocked, wrong address, route failure or offline target | Verify the address and test the service with its application protocol; compare another vantage point. |
| High maximum with low average | Queueing or a transient route event | Repeat over time and inspect MTR; do not report the maximum as normal latency. |
| Loss at one middle hop only | That router deprioritizes diagnostic replies | Check whether loss continues to later hops and the destination. |
| Online and local results disagree | Different geographic vantage points, DNS answers, protocols or routes | Align location, address family and target IP before comparing. |
| IPv6 fails while IPv4 works | Broken IPv6 path, DNS preference or firewall policy | Test each address family explicitly and inspect the IPv6 route. |
What latency numbers mean
There is no universal “good ping” threshold in the available operational guidance. Acceptable RTT depends on geography, path length, congestion and the application’s tolerance. Use your own baseline for the same endpoint and connection. Rising average RTT, widening minimum-to-maximum spread or increasing loss is more informative than applying an arbitrary cutoff.
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Only clean shots are billed. Bot checks or CAPTCHAs, blank pages, timeouts, failed loads and cache hits cost nothing, and response headers identify the page verdict and billing status. Its MCP server provides take_screenshot, get_page_info and capture_pdf tools for Claude, Cursor and other MCP clients.
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cURL
See the ScreenshotNeo documentation for all options. Replace the target URL with the page containing your test output.
curl -G "https://api.screenshotneo.com/v1/shot" -d access_key=YOUR_API_KEY --data-urlencode url=https://stripe.com -o shot.webpPython
import requests
r = requests.get("https://api.screenshotneo.com/v1/shot", params={"access_key": "YOUR_API_KEY", "url": "https://stripe.com"}, timeout=90)
open("shot.webp", "wb").write(r.content)Node.js
const q = new URLSearchParams({ access_key: 'YOUR_API_KEY', url: 'https://stripe.com' });
const res = await fetch(`https://api.screenshotneo.com/v1/shot?${q}`);ScreenshotNeo includes full-page capture, device and viewport controls, custom waits, headers, cookies, user agents, caching, signed links, asynchronous webhooks, bulk capture and PDF options. Plans include every feature: 1,000 screenshots per month are free with no card; paid plans start at $5 for 3,000. Create a free ScreenshotNeo account.
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FAQ
Can ping reveal my internet speed?
No. It measures ICMP round-trip behavior and loss, not bandwidth. Use a dedicated throughput test for download and upload capacity.
Should I ping a domain or an IP?
Use both when available. The pair helps distinguish DNS or address-family problems from network reachability issues.
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No. Filtering, rate limiting, congestion, routing and target policy can all affect ICMP replies. Confirm whether loss reaches the destination and whether the application is affected.
Which tool shows every hop?
Traceroute or tracert provides a route snapshot; MTR combines traceroute with repeated probes for ongoing per-hop latency and loss.
The Bottom Line
Use repeated ICMP probes from a known location, test both hostname and IP, and interpret RTT and loss alongside traceroute or MTR and an application-level check. A timeout describes the probe path—not automatically the health of the website.
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