Common Ports Lookup
Search common TCP/UDP ports and the services that use them.
| Port | Protocol | Service | Description |
|---|---|---|---|
| 20 | TCP | FTP-DATA | File Transfer Protocol (data transfer) |
| 21 | TCP | FTP | File Transfer Protocol (control) |
| 22 | TCP | SSH | Secure Shell, SCP, and SFTP |
| 23 | TCP | Telnet | Unencrypted remote login (legacy) |
| 25 | TCP | SMTP | Email routing between mail servers |
| 53 | TCP/UDP | DNS | Domain Name System lookups |
| 67 | UDP | DHCP | Dynamic Host Configuration (server) |
| 68 | UDP | DHCP | Dynamic Host Configuration (client) |
| 69 | UDP | TFTP | Trivial File Transfer Protocol |
| 80 | TCP | HTTP | Unencrypted web traffic |
| 110 | TCP | POP3 | Post Office Protocol (email retrieval) |
| 123 | UDP | NTP | Network Time Protocol |
| 143 | TCP | IMAP | Internet Message Access Protocol |
| 161 | UDP | SNMP | Simple Network Management Protocol |
| 389 | TCP/UDP | LDAP | Directory services |
| 443 | TCP | HTTPS | Encrypted web traffic (TLS) |
| 445 | TCP | SMB | Windows file sharing |
| 465 | TCP | SMTPS | SMTP over implicit TLS |
| 514 | UDP | Syslog | System logging |
| 587 | TCP | SMTP | Email submission (with STARTTLS) |
| 631 | TCP | IPP | Internet Printing Protocol |
| 993 | TCP | IMAPS | IMAP over TLS |
| 995 | TCP | POP3S | POP3 over TLS |
| 1080 | TCP | SOCKS | SOCKS proxy |
| 1194 | UDP | OpenVPN | OpenVPN tunneling |
| 1433 | TCP | MSSQL | Microsoft SQL Server |
| 1521 | TCP | Oracle | Oracle database |
| 2049 | TCP | NFS | Network File System |
| 3000 | TCP | Dev server | Common Node.js / React dev port |
| 3306 | TCP | MySQL | MySQL / MariaDB database |
| 3389 | TCP | RDP | Remote Desktop Protocol |
| 5432 | TCP | PostgreSQL | PostgreSQL database |
| 5672 | TCP | AMQP | RabbitMQ / message queues |
| 5900 | TCP | VNC | Virtual Network Computing |
| 6379 | TCP | Redis | Redis key-value store |
| 8080 | TCP | HTTP-alt | Alternate HTTP / proxies / dev servers |
| 8443 | TCP | HTTPS-alt | Alternate HTTPS |
| 9200 | TCP | Elasticsearch | Elasticsearch REST API |
| 27017 | TCP | MongoDB | MongoDB database |
About TCP and UDP ports
A port is a 16-bit number (0–65535) that identifies a specific service on a host. Ports 0–1023 are the well-known ports assigned to standard services like HTTP (80), HTTPS (443), and SSH (22); 1024–49151 are registered ports used by apps such as MySQL (3306) and PostgreSQL (5432). This is a quick reference of the ports developers and sysadmins reach for most — searchable instantly in your browser.
Related: the HTTP status codes reference, the MIME type lookup, and the IP address validator.
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