Networking & IT Tools
Port Number Lookup
Search or browse common well-known TCP/UDP port numbers and the services that use them.
| Port | Protocol | Service |
|---|---|---|
| 20 | TCP | FTP (data) |
| 21 | TCP | FTP (control) |
| 22 | TCP | SSH |
| 23 | TCP | Telnet |
| 25 | TCP | SMTP |
| 53 | TCP/UDP | DNS |
| 67 | UDP | DHCP (server) |
| 68 | UDP | DHCP (client) |
| 80 | TCP | HTTP |
| 110 | TCP | POP3 |
| 123 | UDP | NTP |
| 143 | TCP | IMAP |
| 161 | UDP | SNMP |
| 194 | TCP | IRC |
| 389 | TCP | LDAP |
| 443 | TCP | HTTPS |
| 445 | TCP | SMB |
| 465 | TCP | SMTPS |
| 587 | TCP | SMTP (submission) |
| 631 | TCP | IPP (printing) |
| 993 | TCP | IMAPS |
| 995 | TCP | POP3S |
| 1433 | TCP | Microsoft SQL Server |
| 1521 | TCP | Oracle DB |
| 3000 | TCP | Common dev server (Node/React) |
| 3306 | TCP | MySQL |
| 3389 | TCP | RDP |
| 5432 | TCP | PostgreSQL |
| 5672 | TCP | RabbitMQ |
| 5900 | TCP | VNC |
| 6379 | TCP | Redis |
| 6443 | TCP | Kubernetes API server |
| 8080 | TCP | HTTP (alternate/proxy) |
| 8443 | TCP | HTTPS (alternate) |
| 9200 | TCP | Elasticsearch |
| 27017 | TCP | MongoDB |
How to use this tool
- 1Search by port number or service name.
- 2Browse the matching results.
Frequently asked questions
What's the difference between TCP and UDP?+
TCP is connection-oriented and guarantees delivery order (used for HTTP, SSH, etc.); UDP is connectionless and faster but doesn't guarantee delivery (used for DNS, streaming, etc.).