Online TCP Ping
Measure how fast a server answers on a port, from our worldwide network.
How to use the online ping
- Enter a domain name or a public IP address.
- Choose the port: 443 for websites (HTTPS), 22 for SSH, 25565 for a Minecraft server, and so on.
- Press Ping. Our server connects four times and shows the time of each attempt, the minimum, average and maximum, and how many attempts failed.
TCP ping or ICMP ping?
The classic ping command sends ICMP echo packets. Many servers and firewalls block ICMP, so a normal ping often fails even though the server works fine. TCP ping opens a real connection to a port instead, the same way a browser or game does, and measures how long the handshake takes. If the port is open, it answers.
The time shown is roughly one round trip between our server and the target, plus a little processing. It comes from the Cloudflare data center nearest to you, so it is close to, but not the same as, the ping from your own computer. To ping from your own device, read how to use ping.
What the results mean
| Result | What it means |
|---|---|
| Under 30 ms | Very fast: the server is close to our data center. |
| 30–100 ms | Normal for the same continent. |
| Over 150 ms | The server is far away or the network is slow. Noticeable in games and calls. |
| Connection refused | The host is online, but nothing listens on that port. |
| No answer | A firewall drops the connection, or the host is offline. |
| Packet loss | Some attempts failed. Repeated loss means an unstable connection or an overloaded server. |
Frequently asked questions
Why can I not ping sites that use Cloudflare?
Our checker runs on Cloudflare, and Cloudflare does not allow connections from its own network back to its own addresses. Sites behind Cloudflare are fast and online if the Is It Down? check shows them as up.
Can I ping my own computer or a game server at home?
Yes, if the port is forwarded on your router and you enter your public IP address. Private addresses such as 192.168.x.x cannot be reached from the internet. To check one port quickly, use the open port checker.
Which ports can I test?
The common ports in the list: web, SSH, FTP, DNS, RDP, Minecraft and Steam game servers, and the alternative web ports. Other ports are not offered, to keep the tool from being used for port scans.
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