Search a reference of well-known TCP and UDP ports by number, service, or keyword. Everything runs in your browser.
Well-Known Port Reference
Search common TCP and UDP port numbers
| Port | Protocol | Service | Description |
|---|---|---|---|
| 20 | TCP | FTP-DATA | FTP data transfer |
| 21 | TCP | FTP | FTP control |
| 22 | TCP | SSH | Secure Shell, SCP, SFTP |
| 23 | TCP | Telnet | Unencrypted remote login |
| 25 | TCP | SMTP | Email routing |
| 53 | TCP/UDP | DNS | Domain Name System |
| 67 | UDP | DHCP | DHCP server |
| 68 | UDP | DHCP | DHCP client |
| 69 | UDP | TFTP | Trivial File Transfer |
| 80 | TCP | HTTP | Web traffic |
| 110 | TCP | POP3 | Email retrieval |
| 119 | TCP | NNTP | Usenet news |
| 123 | UDP | NTP | Network Time Protocol |
| 143 | TCP | IMAP | Email retrieval |
| 161 | UDP | SNMP | Network management |
| 194 | TCP | IRC | Internet Relay Chat |
| 389 | TCP | LDAP | Directory services |
| 443 | TCP | HTTPS | HTTP over TLS |
| 445 | TCP | SMB | Windows file sharing |
| 465 | TCP | SMTPS | SMTP over TLS |
| 514 | UDP | Syslog | System logging |
| 587 | TCP | SMTP | Email submission |
| 631 | TCP | IPP | Internet Printing |
| 636 | TCP | LDAPS | LDAP over TLS |
| 993 | TCP | IMAPS | IMAP over TLS |
| 995 | TCP | POP3S | POP3 over TLS |
| 1080 | TCP | SOCKS | SOCKS proxy |
| 1194 | UDP | OpenVPN | OpenVPN |
| 1433 | TCP | MSSQL | Microsoft SQL Server |
| 1521 | TCP | Oracle | Oracle database |
| 2049 | TCP/UDP | NFS | Network File System |
| 3306 | TCP | MySQL | MySQL / MariaDB |
| 3389 | TCP | RDP | Remote Desktop |
| 5432 | TCP | PostgreSQL | PostgreSQL database |
| 5672 | TCP | AMQP | RabbitMQ / AMQP |
| 5900 | TCP | VNC | Remote desktop (VNC) |
| 6379 | TCP | Redis | Redis key-value store |
| 8080 | TCP | HTTP-ALT | Alternate HTTP / proxies |
| 8443 | TCP | HTTPS-ALT | Alternate HTTPS |
| 9200 | TCP | Elasticsearch | Elasticsearch REST API |
| 11211 | TCP/UDP | Memcached | Memcached cache |
| 27017 | TCP | MongoDB | MongoDB database |
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