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Open Port Checker
Check if a specific port on your network is open and accessible from the internet.
Cheat Sheet
| Port | Service |
|---|---|
| , | HTTP |
| , | HTTPS |
| , | FTP |
| DNS | |
| SSH | |
| , , | SMTP |
| , | IMAP |
| Telnet | |
| , | POP3 |
| Other | |
| MySQL | |
| PostgreSQL | |
| SQL Server | |
| RDP | |
| Redis | |
| OpenVPN | |
| , | SIP |
| MongoDB | |
| Elasticsearch | |
| Minecraft | |
| Source Engine Games |
About Port Checker
This port checker will help you determine if a port on your network is visible to outside connections. It's useful for diagnosing network issues and checking the visbility status of services.
Port Mapping
Port mapping is the process of associating a port number with a specific service or application. It allows multiple services to run on the same machine while still being accessible from the internet.
Blocked Ports
Sometimes, ports may be blocked by your ISP or network admin for security reasons. If a port is blocked, it will not be accessible from the internet even if it's open on your local network.
Note: you are only able to use this tool to check ports on networks you have permission to test. If the network does not belong to you, please do not use this tool.